Historian's Note: All dates relating to the Great Crusade and the Horus Heresy are only approximations as Imperial records from this time are too fragmentary to be wholly reliable.

ca. M30-M31 Eldar Exodus Sensing the end of their civilisation is approaching, a small portion of the Eldar race combine and modify their starships into Craftworlds, gigantic living vessels that are able to accommodate an entire planet's population of Eldar. One by one the Craftworlds begin to escape the murderous, hedonistic corruption that now dominates the Eldar empire's homeworlds. Hundreds of Craftworlds sail into the depths of space in search of the relative safety of the void from the catastrophe that their Farseers claim will soon consume the Eldar people.
Birth of Slaanesh & Formation of the Eye of Terror The great interstellar civilisation of the Eldar falls into decadence and depravity. A new Chaos God is born from the depths of their hedonistic excess in the Warp -- Slaanesh, the Dark Prince of Pleasure. The psychic violence of his apotheosis consumes the worlds at the heart of the Eldar Empire in what is now the Segmentum Obscurus of the Imperium of Man. A vast section of realspace in this region is plunged into the Warp. Its wake forms the permanent Warp rift later known as the Eye of Terror amongst Mankind.
ca. M30 End of the Age of Strife The Warp Storms that have made interstellar travel and communications through the Immaterium impossible for the last 5,000 Terran years of the Age of Strife finally abate after the birth of Slaanesh within the Warp and the Fall of the Eldar.
Age of Wars The Age of Trade between the Squat Home Worlds, Eldar and the Orks lasts for nearly three millennia, but finally collapsed when an enormous Ork battle-fleet, under the command of Grunhag the Flayer, attempted a full-scale invasion of the Home Worlds. Losses on both sides were astronomical. The Squats appealed to their Eldar trading partners for help against the invading Orks, but none was received. The Age of Wars, as it became known, is regarded by the Squats as the blackest chapter in their history, and the double betrayal by Orks and Eldar gave rise to a cultural enmity which still persists. Many strongholds were wiped out by the Orks.
ca. 540.M30 Discovery of Mezoa The world of Mezoa is first discovered in the Cyclops Cluster in the northern reaches of the galaxy as an outpost of the Lucien Mechanicum. Within three centuries it would rapidly gain status as an independent Forge World in its own right.
ca. 570-750.M30 Exploration of Mandragoran Stars Rogue Trader Lady Arica Orpheus explores the reaches of the Mandragoran Stars in the galactic southwest of the known galaxy. She catalogues countless aged stars and Dead Worlds. Records of her voyages mention pre-human ruins and monuments.
ca. 675.M30 The Massacre of Gadure Less than 5,000 Thunder Warriors slaughter 50,000 armed militiamen in less than an hour on the hills of Gaduare in Franc.
ca. 745.M30 Last Church Destroyed The Emperor and a cadre of Legio Custodes destroy the last church on Terra, the Church of the Lightning Stone, after the Emperor speaks with the last priest. This marks the end of superstition and belief in a higher power on Terra in this era, ushering in the Emperor's secular, rationalist ideology known as the "Imperial Truth."
748.M30 The Invincible Reason The Gloriana-class Battleship and flagship of the Emperor's Legiones Astartes I Legion, Invincible Reason, begins its service to the nascent Imperium of Man.
ca. 750.M30 The Primarch Project The 20 superhuman Primarchs are genetically engineered by the Emperor of Mankind in His great gene-laboratories deep beneath the Himalazian (Himalayan) Mountains on Terra, in the depths of what will become the Imperial Palace. As His greatest creations near completion of the gestation cycles, the Chaos Gods penetrate the confines of the Emperor's laboratories despite His psychic wards and seize the nascent Primarchs from the Emperor's sanctum, scattering them through the Warp across human space while still in their gestation capsules. But all is not lost, as the Emperor still possessed their gene-sequences, which he would utilise as the genetic templates for His Legiones Astartes -- the Space Marine Legions.
ca. Unknown Date.M30-798.M30 The Unification Wars During the turbulent era known as the Age of Strife, the Sol System and the nearby star systems that had been colonised by humanity during the Dark Age of Technology were effectively cut off from interstellar travel or communication with each other due to the massive Warp Storms that swept the galaxy as the Immaterium was roiled by the millennia-long gestation of the Chaos God Slaanesh and the turbulence that marked the decay of the Eldar empire before the Fall. During this dark time, Terra sometimes held sway over the Sol System, while at other times the rulers of Mars or Luna were dominant. The different worlds found themselves constantly at war. During this long, 5,000-year-period of anarchy, fear and violence, Old Earth's once unified planetary government had completely broken down and been divided into dozens of warring states of so-called techno-barbarians. Continuous warfare raged across the surface of Terra for 2,500 years, beginning in the late 27th Millennium. Little remained of the once sophisticated civilisation of Old Earth's glorious past as the center of a growing human interstellar civilisation marked by advanced science, high culture and wondrous technologies. Techno-barbarian warlords and their warrior hordes continuously fought over the planet, which had become little more than a massive battleground for their wars of attrition. They made use of chemical, biological and even thermonuclear weapons of mass destruction, and slowly transformed the cradle of Mankind into a battered, post-apocalyptic wasteland across most of its scarred surface. This was a dark period for the people of Old Earth when they were dominated by brutal rulers and despotic tyrants. It was against this backdrop of oppression, violence and casual brutality that the Emperor of Mankind first revealed Himself to the people of Terra. In secret, He had been planning for this moment in history for millennia, ever since the Age of Strife had fractured what remained of the ancient human federation. With His massive army of genetically-enhanced warriors who comprised the first units of the Imperial Army and would serve as the prototypes for the later development of the Space Marines, the Emperor began His conquest of Terra with the intent to reunite the warring nations into a unified planetary government and then use Terra as the springboard from which to begin His reconquest of the galaxy under the aegis of an Imperium of Man dedicated to the Imperial Truth of progress and reason. Brutal rulers such as the warlord Kalagann of Ursh, Cardinal Tang of the Yndonesic Bloc, and the most infamous of all, the half-mad, half-genius Nathaniel Dume, the Tyrant of the Pan-Pacific Empire, would all fall by the wayside. Once unleashed, the armies of the Emperor swept all before them like wheat before the harvester's scythe until all the techno-barbarian warlords had either been conquered outright or had agreed through diplomacy to become subservient to the Emperor's will. During this time the Emperor created a number of military organisations, such as the Imperial Army, which would become the nucleus of the armed forces that would support His Legiones Astartes and His reconquest of the human-settled galaxy. Amongst the early Imperial Army units that saw action during the Unification Wars were such venerable regiments as the Geno Five-Two Chiliad, which would become one of the oldest and most respected regiments within the Imperial Army. Like many of these early regiments, the geno-soldiers were created through the use of some of the Emperor's sophisticated genetic engineering techniques, developed in His laboratories beneath the Himalazian (Himalayan) Mountains and on Luna. The most elite of this first generation of genetically-engineered supersoldiers were known as the Thunder Warriors, men who were physically stronger and more formidable in combat than even the later Space Marines, though they were engineered to be vicious killers and lacked many of the more noble aspects of the Astartes as well as their tremendously long lifespans. The Thunder Warriors were engineered to be the means to an end and were never intended to be integrated into the Emperor's new realm after Unity had been achieved. Through genetic engineering and selection the standard geno-soldiers displayed many of the characteristics of the perfect human warrior -- they were physically more resilient, stronger and capable of taking more damage than any of their unaltered techno-barbarian foes. These early genetically-engineered Imperial Army regiments would go on to continue serving the Emperor after the conclusion of the Unification Wars. These regiments would eventually be referred to as the Old Hundred, and would form the core of the initial military force that embarked upon the Emperor's galaxy-spanning Great Crusade in the late 30th Millennium beside his newly created Space Marine Legions. The Emperor accepted the deaths of the many innocents that resulted from the conquest of Terra with great remorse in order to achieve the greater good of unifying humanity and protecting it from the manifest predations of the Warp and xenos of the galaxy. Unimaginably large, full-scale battles during the Unity campaign would last for solar weeks on end, with body counts in the millions that sundered mountains and split entire continents. Future Imperial scholars would later dismiss these victories as lurid hyperbole, refusing to believe that such clashes of arms could possibly have been fought, but indeed they were. The Imperial historical chronicles tell of the last battle of the Unification Wars, known as the Battle of Mount Ararat, which was fought in the Kingdom of Urartu. During this final battle the remaining Thunder Warriors were slain to a man. The chronicles recorded that the famed Thunder Warrior Arik Taranis, known as the "Lightning Bearer," raised the Banner of Lightning at the final declaration of Unity which established the rule of the Emperor of Mankind over the entirety of Terra before dying of his wounds. It was a measure of the Thunder Warriors' heroic sacrifice that they had all died to win the last and greatest victory for the Emperor. Unfortunately, this heroic version of events was completely false. The Thunder Warriors had not died to a man during the final battle of the Unification Wars. They had been brutally culled from existence by the Emperor's own servants on His orders. The Thunder Warriors had been betrayed by their own creator, a terrible secret skillfully concealed from the people of the Imperium for more than 10,000 Terran years. When the Unification Wars were complete around the year 798.M30, the Emperor forged a new unified planetary government for Terra under His leadership.
ca. 780.M30 First Founding Utilising the genetic material from the stolen Primarchs, the Emperor creates gene-seed and implants it into His already elite Terran soldiers. They provide the genesis of His Legiones Astartes. The 20 original Space Marine Legions are created during the First Founding. Grabiya's Theorem posits the solution to solve the diminishing stability of the Space Marines' gene-seed stores through over-use, due to the rapid expansion of the nascent Imperium of Man by the Legiones Astartes in this era. This theorem demonstrated that a Primarch's genetic code could be used to stabilise and expand existing Astartes gene-seed stocks with what was hoped to be "minimal deviation" and mutation from the baseline genetic code. Sorian's Inductus Excelsus shows that the requirements for more warriors was vast. Accelerated gene-culturing techniques are implemented, reducing the processing time to create a Space Marine to one standard year. However, this accelerated gene-seed has unseen fundamental flaws.
Unknown Date. M30 Sa'afrik Liberation The XII Legion's first recorded engagement was during the Sa'afrik Liberation of the Unification Wars where they served as a spearhead of shock troops, mounting direct annihilation assaults on enemy forces, both in open battle and fortified positions. They proved able to carry the attack despite their then-relatively small numbers by sheer courage and the fury of the violence they could unleash. After its initial battles in the conflict the nascent XII Legion seems to have been largely held in reserve by the Emperor during the later Unification Wars.
Unknown Date. M30 Pacification of the Cephic Hives The Pacification of the Cephic Hives was another early campaign of the XII Legion during the latter days of the Unification Wars. The Emperor Himself dubbed the XII Legion his "War Hounds" at this time as a tribute to the savage and tenacious way they fought to pacify the narco-sprawls of the Cephic Hives.
ca. 790.M30 First Pacification of Luna This early Imperial campaign was the first operation mounted by elements of the early Space Marine Legions beyond the skies of Terra while the Terran Unification Wars were still raging across the surface of Mankind's birth world. The combined force of the VII, XIII and XVI Legions (later respectively named the Imperial Fists, Ultramarines and Luna Wolves) lifted from the surface of Terra in a scattering of rocket flame. The as yet unnamed XVI Legion had been chosen to serve as the Space Marine force's vanguard, and had brought its full strength to bear. In a daring surprise assault the XVI Legion launched a planetary strike while their brother Legions drew fire from Luna's defensive weapons. Within six hours of the first shot being fired, Luna had been pacified and brought into Imperial Compliance, the first off-world conquest of the Imperium of Man. Faced with annihilation, the surviving Selenar cultists bent the knee instead, their surrender communique transmitted to Terra calling for the Emperor to "call off his wolves". The XVI Legion earned their name -- the Luna Wolves.
Incaladion Conflict Around fifty standard years before the Great Crusade would finally reach the Forge World of Incaladion, after a particularly brutal series of incursions and raids, the Taghmata Omnissium -- the feudal order upon which the defence and military hierarchy of a Forge World of the Mechanicum is based -- finally broke down. In the ensuing strife, the Preceptor-General of Incaladion was assassinated and the Forge World split into warring or isolationist factions, bereft of central control or co-ordination, laying it open to invasion and the devastation which followed. By the time the Great Crusade's advance elements reached Incaladion, it was a global battleground, disported by a dozen different armies; Mechanicum, Renegade and xenos unleashing atomic fire and yet more savage weapons upon each other. During this time, overwhelmed and vastly outnumbered, the Legio Fureans refused to retreat or retrench, and shattered its blade on foes uncounted until it became only a shadow of its former might, reduced to defending the last forge-fane of its dead regent.
ca. 798.M30 The Great Crusade Begins The Great Crusade was the period in the early history of the Imperium of Man, lasting from approximately 798.M30 into the first decade of the 31st Millennium (a little over two standard centuries), when the Imperium was expanding as it sought to bring all of human-settled space back under the control of a single ruler, the Emperor of Mankind. The Great Crusade marked a brief era in human history of rebuilding, reunification and rapid technological advancement following the complete regression of Mankind into techno-barbarism during the 5,000 years of the Age of Strife. It was a time when the Emperor of Mankind still lived in the conventional sense and led His people in person, and is considered the Golden Age of the Imperium before the long, slow slide into cultural stagnation, political repression and increasing warfare that marked the ten millennia after the Great Crusade and the Horus Heresy had ended. The Emperor of Mankind sought to unite all of humanity under one banner following the Long Night of the Age of Strife, and end inter-human conflict. Once united, the Emperor intended to begin the next stage of His great plan to ensure human domination of the Milky Way Galaxy, which He judged to be necessary if humanity was to survive the never-ceasing threats to its existence embodied by Chaos, myriad xenos races and its own fragile human nature. To carry out the Great Crusade and reunite all the scattered colony worlds of Mankind beneath the single banner of the Imperium of Man, the Emperor created the Space Marine Legions and the Imperial Army to aid the Astartes as a support and garrison force. The use of accelerated gene-culturing of gene-seed organs to fill the need for vast numbers of Space Marines later lead to the development of genetic flaws in many of the Legions, which would be one factor in bringing on the Great Betrayal of the Horus Heresy. These forces, allied with the technological and military might of the Mechanicum as required by the Treaty of Mars, would bring the light of the Imperial Truth and enforce Imperial Compliance with the new regime on every human world encountered. At its peak in the early 31st Millennium, some 203 standard years after it began, there were 4,287 primary Expedition Fleets engaged upon the business of enforcing Imperial Compliance and extending the Imperial aegis across the galaxy as well as 60,000+ secondary deployment groups involved in regulating Compliance or Imperial occupations. A further 372 Expedition Fleets were regrouping or refitting in the Sol System or other Imperial hub star systems or resupplying as they awaited new orders. Some 4.3 million Remembrancers, official Imperial artists and journalists, were sent out with these fleets in the final days of the Great Crusade to record for posterity in pictures, words and music all that the Imperial warriors of the Crusade were accomplishing in the name of Mankind. Finally, every Imperial Expedition Fleet carried with it a corps of Iterators, Imperial philosophers, rhetoricians and propagandists who sought to spread the Imperial Truth to every human world and convince their populations of the benefits to be had from Imperial rule. The Great Crusade was under the direct command of the Emperor of Mankind until the great victory won against a massive Ork WAAAGH! during the Ullanor Crusade. After the defeat of the Orks achieved a new high point for the Great Crusade, the Emperor retired to Terra to begin work on a secret project deep within the Imperial Palace to open the labyrinthine interdimensional Eldar Webway to humanity's use so that the Imperium could be tied together as never before. The Emperor named His favorite son Horus, the Primarch of the Luna Wolves Space Marine Legion, as the Imperial Warmaster and gave him full authority to direct the Great Crusade's progression as he saw fit, including the right to command all of his fellow brother Primarchs and their Legions of Astartes. The Emperor also established the Council of Terra and the Imperial bureaucracy, the forerunners of the later Senatorum Imperialis of the High Lords of Terra and the Adeptus Administratum, to begin shifting the Imperium from His personal rule to a government that more closely served the needs of the Imperium's common people. The Emperor's secrecy and willingness to hand power over to others produced enormous tensions with some of the Primarchs and ultimately became one of the weaknesses that the Ruinous Powers exploited to corrupt 9 Primarchs and their Space Marine Legions into the service of Chaos. This unleashed the terrible civil war known as the Horus Heresy that ended the Great Crusade and the Golden Age of the Imperium. From that time to the present in the late 41st Millennium, the Imperium has known only stagnation, oppression, religious strife and endless war.
Pacification of the Boetian Lowlands When the XV Legion (the future Thousand Sons) was created, this nascent Legion was used to quell the few pockets of isolated resistance to the Emperor's rule that remained on Terra during the Wars of Unification. Boetia was a nation that had existed since the Age of Strife and was chiefly known for holding out against the Unification for a considerable period of time until it was finally forcibly incorporated in the newborn Imperium. The ruling family, the Yeselti, attempted to stubbornly cling to power, forcing Imperial Army forces to invade their province the Astartes of the XV Legion were sent in to finally crush any further resistance in a brilliant campaign that lasted only six weeks. Shortly after achieving this objective, the XV Legion was formally named the Thousand Sons by the Emperor Himself and was sent out into the galaxy as part of his Great Crusade. This particular conflict holds the distinction of being the final campaign of the Unification Wars that took place during the Great Crusade.
The Unheard War This terrible conflict was fought in the Azurite Stations of Uranus in the days before the Great Crusade broke the bounds of the Sol System. Named for the corroded blue of the inner surfaces of their hulls, the Azurite Stations were a linked crescent of void citadels, home to a collection of artisans and near-space scavengers. The newly Compliant Azurites turned to fueling the Great Crusade as conscripts for the ships of the Armada Imperialis. But soon they faced a threat in the form of the Solar Pirates -- remnants of a confederation of renegades and mutants. Soon war raged, as the moons of Neptune were embroiled in conflict. The VII Legion heard the cries of the Azurites and assaulted the void stations. 50 Legionaries made their way inside where the Solar Pirates had fortified themselves. Sensing defeat, the Pirates released a psy-plage -- an ancient weapon thought eradicated during the Unification Wars. In a heroic display of bravery, the Imperial Fists sacrificed themselves, so as not to allow the psy-plague to escape the confines of the void station, by overloading the reactors, causing the void station to explode. The "Screaming" was never visited on Mankind again, and it is said that when the Emperor heard of the sacrifice of the fifty Imperial Fists, He ordered the newly-raised Bell of Lost Souls in the Imperial Palace tolled for the first time.
Unknown Date. M30 Cerberus Insurrection The newly dubbed War Hounds Legion were tasked alongside the Terran XXIInd Dracos Regiment of the Imperialis Auxilia to subdue the asteroid prison colony of Cerberus which had risen up in anarchic revolt in a state of near continuous rioting and mob violence. Initial attempts to impose order by Terran troops had been thrown back in disarray as it became apparent that among the insurrectionists was a renegade cadre of outlawed Thunder Warriors, long believed dead, calling themselves the Dait'Tar. With many of the Space Marine Legions already assigned to the first Expeditionary Fleets of the Great Crusade and en route to the stars, the Emperor Himself dispatched His War Hounds to Cerberus with explicit instructions to reclaim Cerberus colony and carry the Emperor's wrath to those that had defied Him. Within five hours, a signal was received from Praetor-Commander Calyb Hax of the XII Legion that Cerberus-Primary had been returned to Imperial Compliance.
ca. 800s.M30 The Consus Drift Compliance The Consus Drift was a belt of stellar debris connected together by tunnels made from the metal entrails of shipwrecks. Billions of humans who had been stranded for millennia, made these asteroids their home. The Imperium discovered the Consus Drift by accident, when the 3rd Expeditionary Fleet, under the command of the VII Legion, was caught in the stellar phenomenon, known as the Mirror Race, and thrown into that region. They were soon set upon by the Drift Clans -- humans schooled and blooded in the brutal arts of void warfare. Thought the Driftborn fought well, they were no match for the transhuman Legionaries. The commander of the VII Legion gave the people of the Consus Drift an ultimatum: Imperial Compliance or extermination. The Clan Warriors immediately surrendered. The 3rd Expeditionary Fleet left after repairs were made, but not before the Imperial Fists had taken the youngest and strongest male warriors of each of the Drift Clans. Of those who survived initiation into the VII Legion, all were inducted into a single unit; the 356th Company, whose reputation for excellence in out-hull void warfare and starship assaults was without peer.
ca. 803.M30 The 'Flesh Change' The XV Legion begins to display powerful psychic abilities, which was a welcome development for its Astartes as they sought to further emulate the Emperor. Throughout the long campaigns, the Thousand Sons made extensive use of sorcerers, and their Warp-derived powers would leave whole populations in thrall to their will rather than carrying out a planetary conquest through a costly full frontal assault like the other Space Marine Legions. But soon, the Legion's joy at their psychic gifts turned to revulsion and horror as a wave of ghastly, degenerative mutations began to affect large portions of the battle-brothers of the XV Legion. These mutagenic changes began to be called the 'Flesh Change' by the Legionaries, and were much feared, as the spiral of degenerative mutation ultimately reduced a proud XV Legion warriors into a mindless mutant abomination that would later be recognised by the Imperium as a gibbering Chaos Spawn. The number of active Astartes within the XV Legion soon began to dwindle to dangerously low levels as a result of the ravages of the Flesh-Change.
803.M30 Discovery of the Paramar System This unusual trinary star system which possesses vast mineral wealth amid its thirty-seven recorded main satellites, was identified and entered into the Carta Imperialis by the Rogue Trader Hel DeAniasie in 803.M30. Being located in an unusually stable Warp-synchronous location in space, the Paramar System quickly became a way point for the Imperium's expansion into the Segmentum Obscurus.
ca. Early-800s.M30 The Hunting of the Ak'Haireth An alien menace known as the Ak'Haireth or 'Bone Drinkers' were initially encountered in the early years of the Great Crusade in the western reaches of the Segmentum Solar. These fungoid, predatory and parasitic life forms were fuelled by the slow and agonisingly painful siphoning of nutrition from living animals, primarily human bone marrow. They inhabited the scavenged void ships of other species and raided isolated colonies and Feral Worlds unable to resist their predations. They were subjected to extermination pogroms carried out both the Luna Wolves and the VIII Legion (not then yet formally known as the Night Lords) which had been thought to have been successful.
805.M30 Treaty of Mars (Treaty of Olympus Mons) The Emperor of Mankind came to Mars and landed atop the great volcano of Olympus Mons. Knight Taymon Verticorda, of House Taranis, is the first representative of the Mechanicum to encounter the Emperor on His arrival on Mars. At their first sight of the Master of Mankind many Tech-priests were overcome with the feeling that they had met the living embodiment of the Omnissiah, the Machine God clad in human form. In return for peace between Terra and Mars, the recognition of the Tech-priests' right to practice their faith and their right to maintain control over both Mars and the other Forge Worlds they had settled, the Mechanicum agreed to build Imperial starships and provide all of the war materiel necessary for the Emperor's Great Crusade. In addition, the Mechanicum agreed to be bound by the Emperor's commandment to never develop certain forbidden technologies such as "Abominable Intelligence" (artificial intelligence). With the signing of this agreement, known as the Treaty of Mars or the Treaty of Olympus Mons within the Mechanicum, the Cult Mechanicum became the Mechanicum of the newly-forged Imperium of Man, and the Palatine Aquila was refashioned to bear two heads, one for Terra and one for Mars.
Discovery of Primarch Horus Lupercal During the early years of the Great Crusade, the future Primarch of the XVI Legion was discovered upon the barren and impoverished feral Mining World of Cthonia by one of the first expeditionary fleets to leave the Sol System. Highly creditable claims state that the Emperor found Horus, the first of his lost sons, but no source specifies where, or the location of this finding. Surrounded in millennia of myths and allegory, the truth of Horus' origins will more than likely never be known.
Siege of Reillis The Emperor and Horus Lupercal fought together on many occasion during the early years of the Great Crusade. At the fortified city of Reillis, a human settlement unwilling to accept the Emperor's Imperial Truth, the defending army used secret tunnels to infiltrate behind the besieging Imperial Army and hundreds of shock troops swamped the Imperial's command encampment. Unprepared and unarmoured, the Emperor and Horus fought back to back until a plasma blast stunned the young Primarch and sent him staggering to the ground. The Emperor stood over his son and refused to give ground until reinforcement arrived to drive their attackers back.
ca. 806.M30 The Gorro Hollowing Within the Telon Reach was an Ork empire that rivalled that centred on Ullanor, and at its heart was the scrap world of Gorro. Capable of generating destructive yields of terrifying potency, the Emperor decreed that Gorro must be destroyed. Leading the assault Himself, the Emperor and his dutiful and favoured son Horus, at his side, teleported into the subterranean tunnel network deep within the strata of the scrap planet. As the Space Marines attacked, the Ork resistance they faced was nearly overwhelming. At the height of the battle, the Emperor was split from the rest of his forces, and came face-to-face with an Ork of monstrous size, larger than any encountered by Mankind in its long history, and snatched the Emperor from the ground in its massive bionic claw. As the creature's grasp closed to throttle the Master of Mankind, Horus stormed through the press of battle and cut the Ork's arms from its body with a single blow. Together father and son led their forces deeper into the vast sphere of scrap until they reached the centre of Gorro, and caused the scrap world to implode upon itself after they sabotaged its self-sustaining Warp-fold envelope.
806.M30 Compliance of the Osiris Cluster In the eighth year of the Great Crusade, the expeditionary fleet of the XIII Legion discovered the Osiris Cluster, a grouping of eleven star systems that made up the inner portion of the Segmentum Solar's second quadrant. The inhabited worlds of this region, many technologically advanced at contact, were brought into Imperial Compliance in relatively bloodless order. It was viewed as a highly successful campaign in which the XIII themselves had a hand.
ca. 807.M30 Discovery of Primarch Leman Russ During the early years of the Great Crusade, the future Primarch of the VI Legion was discovered upon the inhospitable and icy Death World of Fenris. As a foundling, the infant Primarch had been raised by wild wolves, and once he grew to maturity, conquered the various barbarian tribes of his world, becoming its master. Knowing he would never willingly bow to anyone, the Emperor challenged the Wolf King to a series of contests and soundly beat the young Primarch, who bent his knee in service to the Emperor.
807.M30 The Battle of 02-34 (Rust) The X Legion (yet unnamed as the Iron Hands) led the invasion of the planet designated 02-34 (or the "Battle of Rust" as it would be commonly known to Imperial military historians) against the Orks of the powerful and expanding "Krooked-Klaw" empire of Wardog Kulo, spanned more than sixty inhabited star systems to the galactic north-east of Seraphina. Under the generalship of their then-Legion commander, Lord Commander Amadeus DuCaine, the X Legion formulated a plan of attack which owed much to the feared and pitiless battle-craft of Old Albia; a tactic known as the 'Hammer and the Storm'. After days of continuous fighting, though they had not lost the will to fight, the Orks of Rust simply ran out of blood and machinery to spend. At the end of the battle, the X Legion had suffered less than a fifth of its number in fatalities; a far lower figure than might have been expected. Rust was hailed as a great triumph also on account of how little had been sacrificed to attain it.
ca. 800s.M30 War in the Shedim Drifts During the war in the Shedim Drifts against the marauding Eldar of Craftworld Mór-ríoh'i, a vast Imperial force comprised of no less than four Titan Legions (the Legio Atarus, Legio Mortis, Legio Fureans and Legio Osedax) were assembled and placed under the overall command of Commander Horus Lupercal and his Luna Wolves Legion. The apocalyptic battle which raged upon the planet's surface saw a full demi-Legio of the Legio Atarus encircled and all but destroyed. The Lupercal had cruelly used them, without their foreknowledge or consent, as a ruse to divert the strength of the enemy away from the direct defence of their craftworld while his Legion undertook a surprise assault against it. The war of the Shedim Drifts was a great victory for Horus and all those of the Imperium who fought in the campaign gained glory because of it, but at the expense of the Legio Atarus, an injury that the Firebrands would not forget.
ca. 810.M30 Discovery of Primarch Ferrus Manus The Emperor comes to the Feral World of Medusa to reunite with His son Ferrus Manus. Not long after their reunion, Manus takes command of the X Legion and remakes them in his image, renaming them the Iron Hands.
813.M30 Mezoa joins the Imperium Founded first as an outpost of the Lucien Mechanicum in 540.M30 before the Great Crusade, before rapidly gaining status as an independent Forge World in its own right in 813.M30. This war-world was dedicated solely to the production of heavy arms and armour. The Mezoan forges were built under the direction not only of the Archimandrites of the Cult Mechanicus, but also the minds of both the Emperor and, it was said, the Primarch Ferrus Manus in later years after joining the Imperium.
824.M30 Contact with the Lethe Lethe was first contacted in 824.M30 by the Rogue Trader Vaspperly Elgin, ahead of the Great Crusade's advance in force into the Coronid Deeps region some years later. Used as an early staging point by Crusade fleets, Lethe later served its part within the Imperial fold, providing several elite pioneer light infantry cohorts for the Imperialis Auxilia.
ca. 829.M30 The Proximan Rebellion The Proximan Rebellion is one of the earliest recorded engagements of the as-yet unnamed III Legion. Assigned to the Imperial Compliance ceremonies and as the Emperor's honour guard for Proxima's formal accession into the Imperium, an insurrectionist trap was sprung which resulted in the III Legion's XVIth Cohort (Chapter) fighting and dying to the last warrior alongside the Legio Custodes, never giving ground during the insurrectionist surprise attack on that world's ceremonial plaza. By their sacrifice was the wounded Emperor, who had suffered injury through the use of a Vortex Weapon by the enemy, bought time to recover and fight His way clear of the Proximan insurrectionists' trap. In recognition of this sacrifice, the standard of the Palatine Aquila so fiercely fought for that day was given to the Legionaries of the III Legion by the Emperor's own hand, to be their relic ever after, along with the right to end the Proximan revolt by Exterminatus and so repay the blood that was owed them.
ca. 830.M30 Gene-Seed Crisis Coming within a solar year of their great moment of triumph fighting at the Emperor's side at Proxima, the III Legion suffers the catastrophic loss of nearly their entire gene-seed stock. This would prove a turning point that was to forever alter the Legion's future. When the III Legion's gene-seed reserve was dispatched to Luna for establishment there, it is not quite clear what exactly happened next. Some claim that elements of the Selenite gene-cults still resistant to the Imperium hijacked a defence laser and destroyed the ship carrying the gene-seed, while conflicting accounts recount that the ship lost control and crashed as it was attempting to dock, whilst others claim that it simply vanished. The loss of the III Legion's gene-seed reserve was a severe blow, but it would not have endangered the Legion's survival if a second calamity had not occurred in quick succession. It was soon discovered that a fast acting viral blight had suddenly infected several of the gene-seed vaults on Terra, its cause and origin unknown. Feverishly the Bio-Magos sought to hold it in check as its progress threatened to wipe out in a matter of hours what had taken a century to build, but the doubtlessly artificial-and many surmised xenos-infection defied treatment, and it was only the intervention of the Emperor's own peerless genius that was to purge the taint. While many Legions suffered losses from this attack from an unknown quarter, the blight was found to have destroyed the gene-seed of the III Legion in its entirety.
The "Ghost Legion" Anomalous Legiones Astartes activity is first reported. There are only a few sparse but suggestive fragments -- anomalous records of unknown Legiones Astartes units carrying out targeted strikes, abductions and assassinations, both on Terra and beyond, and reports of Space Marine units answering to no known masters or Legion allegiance passing through war zones on high priority missions and under the writ of unassailable clearance codes which broached no question. These mysterious elements are attributed to the mysterious 'Ghost Legion'.
ca. 832.M30 Discovery of the Primarch Fulgrim The Emperor comes to the industrial Mining World of Chemos and reunites with His lost son Fulgrim, who upon first meeting, recognises the Emperor for who He is, and bends his knee and offers his sword in eternal servitude. Pleased, the Emperor brings Fulgrim into the Imperial fold, and not long after, gives him command of the III Legion.
ca. 830s.M30 The Praxil Rebellion When the worlds of the Praxil System were first discovered, the Imperium was pleased by the prospect of adding them to the Imperium. Though bringing Praxil into Imperial Compliance would bring the Imperium great renown, this formidable civilisation refused to bend the knee to the light of the Imperial Truth, and instead were prepared to fight to maintain their independence. Their warfleet was formidable, and managed to push back the initial invasion of the Imperial Expeditionary Fleet. The Imperium wanted Praxil's wealth and resources to harness to the needs of the Great Crusade, and so the securing of Praxil fell to an Army Group-sized force of the Emperor's Children, supported by selected elements of the Imperial Army and the forces of the Mechanicum. But the initial campaign did not go well, as the Imperial forces sustained severe casualties and faced opposition at every turn, despite changing their tactics. Too prideful to ask for help, the War Council of Terra sent a force of Blood Angels and Imperial Fists to assist the beleaguered Imperial forces. Despite his misgivings and slight to his personal honour, the Lord Commander accepted his cousin Legions' assistance and immediately drew up plans for prosecuting the second offensive against the Praxil. With their combined strength, the Imperial forces launched a successful second offensive against the Praxil that soon saw an Imperial victory.
ca. 800s.M30 Defence of Tranquility The Defence of Tranquility was a protracted and vicious engagement fought by the Emperor's Children on the periphery of the Dalinite Nebula region during the early phase of the Great Crusade's progress into the Galactic East. Of particular interest to the Imperium was the discovery of the Dalinite Gates, which were part of the mysterious series of Warp Gates scattered across the stars, and could greatly increasing the ability of the Imperium's fleets to reach new targets and expand the reach of the Emperor's forces. A Cohort barely numbering 500 warriors of the Emperor's Children were given the important role of securing the world of Tranquility on the trailing edge of the Imperial advance. The world was utterly worthless except that a Warp Gate, designated the Tranquility Gate, hung in high orbit above the planet's pole and a forward Imperial navigation and signal relay had been constructed there. Without warning, a larger xenos fleet exited the warp gate, which proceeded to mount a ground assault on the planet's surface. The Imperial warships executed a rapid, desperate counterattack, which caused the xenos fleet to flee back through the warp gate, and leaving their ground forces to be annihilated by the vengeful Emperor's Children.
Extinction of the Katara The xenocide of the alien Katara was a brutal campaign of extermination carried out against this insular Abhuman civilisation that had evolved in the Kenuit System. Initially offering no resistance, matters only deteriorated when the Katara were asked directly to formally surrender to the Imperium. Soon a lone Kataran warship arrived and destroyed the Light Cruiser Locrian before sustaining damage itself and withdrawing. So provoked, acting Lieutenant Commander Abdemon of the Emperor's Children ordered the invasion of the largest Kataran city-complex. The Katara's diplomatic representatives came forward again, requesting to meet in a truce. He made the proposal that the conflict should be decided by a lone champion from each faction. Lieutenant Commander Abdemon agreed and said that he would enter the field as the Imperium's champion. Both combatants fought a brilliant, drawn out and bloody duel. Eventually, Abdemon slipped beneath the alien's guard and delivered the killing blow. With their champion defeated, the Kataran representatives ordered that all should know that their people had been defeated by an enemy of equal honour but superior arts. The order given, the Kataran leaders fell on their own swords before the Emperor's Children. Across all their domains, every member of the Katara followed their leaders in death and the Kataran cities became massive tombs. Showing respect for their fallen foes, the Emperor's Children departed the Kenuit System, leaving the worlds of Katara behind as Mortuary Worlds.
Castigation of Terentius When the forces of the Great Crusade first entered the Ordoni Cluster, they encountered the formidable warlord Vatale Gerron Terentius. Observing the forces arrayed against him, Terentius was forced to take the path of survival and surrendered to the Imperium. For the next five decades he rose in power and reputation, conquering worlds around the Halo Stars in the name of the Emperor. At the height of his powers, he had the ear of Malcador the Sigillite and the countenance of several Primarchs. When he finally turned against the Imperium, many were shocked. He began a contra-Crusade to conquer already-Compliant worlds to add to his pocket empire. The Imperium responded by sending Horus and his Luna Wolves Legion to not only break the Renegade but to demonstrate to any others who harboured similar ideas within the Imperial forces the inevitability of a betrayer's defeat. Large support from the Night Lords, Iron Hands and the Alpha Legion, joined the might of the Luna Wolves. Soon the rebel forces were fragmented, driven by tales of culled worlds. At the height of the campaign, Horus himself, with a cadre of 50 elite Justaerin Terminators, teleported aboard the bridge of Terentius' flagship, where the Commander slew the unrepentant traitor with his Talon. The Night Lords decimated every world within Terentius' rebel empire. The power of the Iron Hands and elements of the Ordo Reductor were brought to bear on every structure on Terentius' bastion worlds. Soon the rebels of his realm were slaughtered, their cities smashed to dust, and his homeworld's very air laced with toxins. Once the castigation was complete, Horus sent the gold-dipped skull of Terentius to Terra with the ironic warning carried on the lips of the messenger who bore it, 'So perish all traitors'.
ca. Early-830s.M30 Discovery of Primarch Vulkan The Emperor arrives upon the volcanic world of Nocturne. He reunites with His lost son Vulkan, who only agrees to serve the Emperor after competing in a difficult challenge to slay the largest salamander -- a large drake-like creature native to Nocturne. During the contest, Vulkan's life ended up in jeopardy, and though the Emperor had obtained a larger prize, He sacrificed his trophy in order to save His son's life. Humbled by the stranger's deed of self-sacrifice, Vulkan bent his knee to the Master of Mankind. It is believed he served with the Emperor for some time before he finally took command of the XVIII Legion.
833.M30 Osiris Rebellion For unknown reasons, the eleven star systems of the Osiris Cluster declare independence from the Imperium. The XIII Legion sends their 12th Expeditionary Fleet to put down the rebellion. But failures in intelligence turn what was intended to be a swift victory into a battle for attrition against a previously unknown xenos threat -- Osiran Psybrid xenoforms. The vile aliens drive the human population to attack the Legiones Astartes in droves. Ordering his force to withdraw after sustaining heavy losses, Legion Commander Gren Vosotho, along with the XIII Legion flagship Sethaln's Thunder is lost. Command falls to First Captain Marius Gage. The Osiris Cluster is then blockaded. When the 12th Expeditionary Fleet returns a year later with a force heavily augmented from the Solar Armada, elements of the XVIII Legion and specialist anti-psyker cadres from Terra, they found worlds either left as wastelands of unburied dead or locked in turmoil and civil strife.
ca. Late-830s.M30 Discovery of Primarch Rogal Dorn The Emperor's Principia Imperialis fleet comes to the icy world of Inwit and reunites with His lost son Rogal Dorn, the seventh missing Primarch to be found. He quickly instructs Dorn in the ways of the Imperium and their objectives with the Great Crusade, and soon passes off command of the VII Legion, whom Dorn remakes into the Imperial Fists.
ca. 838-844 Colchis Civil War Ends The six-year civil/holy war led by the Primarch Lorgar Aurelian comes to an end. Lorgar, now the Archpriest of the reformed holy order known as The Covenant, promised the masses that their new God would arrive on Colchis no more than a standard year after their victory and that they would know Him only as 'The Emperor'.
ca. 838.M30 Discovery of Primarch Roboute Guilliman The Emperor comes to the "Five-Hundred Worlds" of Ultramar and its capital planet, Macragge, to reunite with His lost son Roboute Guilliman. Impressed with His son's superlative organisational skills and strategic planning, He quickly passes on command of the XIII Legion to Guilliman, who reforges them into his own, as the newly renamed Ultramarines.
ca. Early-840s.M30 Discovery of Primarch Magnus the Red The Emperor comes to the far-flung world of Prospero and reunites with His psychically-gifted son Magnus the Red. Shortly thereafter, Magnus assumes command of the XV Legion and renames them the Thousand Sons.
842-843.M30 Liberation of Incaladion During the liberation of the war-torn Forge World of Incaladion, the IV Legion displayed their typical reliance on rationality and intellect set against infrequent but telling episodes of bloody-minded stubbornness in the face of overwhelming odds. In a gruelling year long campaign, victory was at last achieved, but the war saw the near annihilation of the IV Legion's 8th Expeditionary Fleet's frontline forces in what was arguably a needlessly costly fashion.
843.M30 Discovery of Xana II A damaged galleass belonging to the Rogue Trader Casilida DeAniasie, having been flung far off-course after engaging in battle with Fra'al Corsairs, intercepts a trio of hulking automata warships at the edge of the intergalactic void. Although they might have taken or destroyed her already damaged ship with little effort, these vessels instead offered aid and carried with them a message of greeting and an offer of diplomatic exchange between the 'Sovereign Forge Domain of Xana' and the Imperium of Man and its Emperor.
ca. 840s.M30 Discocvery of Primarch Sanguinius The Emperor arrives upon the irradiated world of Baal, and is reunited with His angelic son, Sanguinius. Not long after their reunion, Sanguinius is given command of the IX Legion and remakes them in his own image, renaming them the Blood Angels.
Discovery of Primarch Lion El'Jonson The Emperor of Mankind comes to the Death World of Caliban and reunites with his lost son, Lion El'Jonson. A young, newly-inducted Calibanite I Legion Librarian, Zahariel El'Zurias narrowly averts an attempted assassination on the Emperor's life. After being given command of the I Legion, the Lion reforges it into his own image, and dubs them the Dark Angels, named after an allegorical figure of Calibanite myth.
ca. Late.840s.M30 Discovery of Primarch Perturabo The Emperor comes to the world of Olympia and reunites with His lost son Perturabo. Upon being given command of the IV Legion after a very short period of adjustment, Perturabo reviews his Legion's battle records and finds them lacking. Therefore he orders his entire Legion to be punished through "decimation." Drawing lots, one in nine Astartes are killed by their remaining Battle-Brothers with their bare hands. Following this action, Perturabo leads his Legion to the Meratara Cluster and forges them into a Legion in his own image. The IV Legion formally becomes the Iron Warriors.
The Fall of the Black Judges This was the Iron Warriors' first Imperial Compliance campaign under the direct command of their Primarch, which was conducted against the barren, ravine-hollowed moon known as the "Rock of Judgement" and its masters, the heretical Black Judges. These self-appointed arbiters of human purity, life and death, were twisted and withered creatures that had once been human in ages past. The IV Legion, reeling from its enforced Decimation as punishment at its new master's hands, was shamed into a desperate desire to prove itself to its Primarch, and it was the Black Judges that were to suffer its pent-up hatred and wrath. By Perturabo's design the enemy was crushed without mercy and their domains were stripped of every valuable resource and technology; wreckage and weapons flowed to Olympia and the Black Judges' long guarded secrets fell also to the newly renamed Iron Warriors and their master, as well as to the Mechanicum in return for their aid. With the world stripped of its resources, the orbital shipyards of the Rock of Judgement were finally set in orbit afresh around Olympia and set to work fashioning a new generation of warships under Perturabo's seal.
ca. 850s.M30 Pacification of Schravaan This was a joint Imperial Compliance action conducted by four Legiones Astartes (Emperor's Children, Iron Warriors, Imperial Fists & Luna Wolves) against the vile xenos Badoon. Upon their home world of Schravaan, the Iron Warriors won a great victory when they stormed the final refuge of the Badoon. They breached the defences and held while the other Legions carried the city beyond. During the following victory feast, Horus proclaimed Perturabo the greatest master of siege warfare in the Great Crusade. Fulgrim then inquired to his brother Rogal Dorn whether he thought even the defences of the Imperial Palace could resist the Iron Warriors, in which Dorn replied that he regarded the defences as being proof against any assault if well-planned. Perturabo flew into a rage and unleashed unfounded accusations against his brother. After this the two rarely spoke, and neither of their Legions served in the same campaign for the remainder of the Great Crusade.
ca. Mid-800s.M30 Discovery of Primarch Mortarion The Emperor comes to the toxic Death World of Barbarus and reunites with His lost son Mortarion. Upon meeting the Emperor for the first time, Mortarion was oblivious to any obvious connection or physical resemblance. Angry, Mortarion declared that he and his Death Guard needed no help to finish their quest for justice. The Emperor quietly challenged the stormy young Primarch's assertion, pointing out his soldiers' failure to reach the last high citadel, and then threw down a gauntlet. If Mortarion could defeat the high overlord alone, He would withdraw and leave Barbarus to its own means. But if he failed, they would join His Imperium of Man and Mortarion would swear total fealty and allegiance to Him. Mortarion was true to his oath. When he recovered, he bent his knee to the stranger and swore himself and the Death Guard to his service. Only then did the Emperor of Man reveal Himself as the young Primarch's true father, and the destiny such service would bring: command of the XIV Legion. Shortly thereafter, the Emperor gives His son command of the Dusk Raiders, who remakes them in his own image, renaming them the Death Guard.
ca. Mid-800s.M30 Conquest of Galaspar This was the first major independent campaign conducted by the newly-dubbed Death Guard after Mortarion took charge of the XIV Legion. The conquest of the non-Compliant Hive World of Galaspar remains one of the most remarkable and brutal victories of the Great Crusade's course through the near reaches of the Segmentum Pacificus. When the Imperial support fleet arrived they were horrified by the aftermath of the slaughter. The billions of humans "liberated" by the Death Guard were almost childishly eager to accept the Emperor's servants and adopt their ways. In the wake of the conquest Galaspar, the cluster of worlds quickly capitulated with terrified speed, all willing to submit to Imperial Compliance under any terms as long as they were spared the reaper's scythe.
ca. 800s.M30 Kajor Compliance On Kajor during the Great Crusade, the Death Guard Legion encountered a warrior race of humans that had fallen to barbarism. Extensive orbital surveys detected no trace of advanced technology, yet it took the XIV Legion nearly six months to bring Kajor to submission. Though the Kajori were savages, armed with little more than blades and crude flintlock carbines, this feral race was able to hold the Death Guard at bay. They were able to do so because they possessed fell powers and unseen allies. In quieter moments, Mortarion still thought of the Kajor campaign and shuddered. Mortarion would later recount the tale of this campaign during the Council of Nikaea as one example of many why he took a personal stance against sorcery and the use of psychic abilities.
Mid-800s.M30 Destruction of WAAAGH! Mashogg In one famous instance, a joint Imperial Compliance campaign was conducted by the Iron Warriors, Space Wolves and White Scars Legions against the vast Greenskin horde known as WAAAGH! Mashogg. Legends record that it was the Primarchs Leman Russ and Jaghatai Khan who routed the Orks of Overdog Mashogg's WAAAGH!, while Perturabo was featured only as the "comrade" who calculated the optimum way to bypass Mashogg's low orbit defences.
Mid-800s.M30 Compliance of the Araaki Spiral A joint Imperial Compliance campaign conducted by the Iron Warriors, Imperial Fists, Dark Angels and White Scars Legions in a region of space known as the Araaki Spiral. The Araakites were well-versed in the art of building fortresses, and their strongholds were dug deep around narrow passes, remote hilltops and natural barriers in the landscape. Once again, the Iron Warriors were sent to a resistant star system to conduct brutal siege-warfare against formidable fortress-builders. The Araakites knew their craft well and the campaign to take their world for the Imperium proved both bitter and hostile. It would take many years for the IV Legion to regain its former strength from the losses sustained during the drawn-out war of attrition that its Astartes suffered in the Araaki Spiral. In the wake of the inevitable Imperial victory, great works of art and heroic verse were composed, celebrating the courage of the other Space Marine Legions, but nowhere in the reams of poetry and artwork were the grim labours of the Iron Warriors judged worthy of note. Only in a predella to a larger work painted by a notable Imperial artisan were the warriors of the IV Legion displayed; it illustrated a lone Iron Warriors Apothecary removing the gene-seed of a dying Legionary as the flag of the IV Legion's greatest rivals, the Imperial Fists, flew over a captured fortress. Perturabo sought out the artist to procure the piece for himself, only to have it put it to the torch once he had done so. If his sons would not be honoured properly, he told the horrified artist, then they would not be a part of a record that glorified another. Afterwards, Rogal Dorn had offered a rich commission for the artist to repaint the predella, but the artisan wisely refused.
The Two Wars of Araneus The worlds of the Araneus Continuity were a series of planets close to the Sol System which had maintained links to one another due to the existence of a series of ancient Warp Gates of unknown origins. Ruled by a caste of Technobility from the world of Araneus Prime at the heart of the network of Warp Gates. After an Imperial squadron accidentally jumped through one of their gates, they were boarded and overwhelmed by cybernetically-grafted warriors. An envoy fleet was sent, and was allowed to return bearing the Continuity's answer to the Emperor's demand of fealty. The Technobility flatly refused to bow to the Emperor, but instead invited Him to join their empire as a tributary. For its response, the Imperium turned to the Imperial Fists. It fell to Hashin Yonnad, Commander of the 39th Household (Chapter) of Inwit, to prosecute the war. A full-scale assault was launched, and within two months their empire was cut from around them, and finally reduced to just Araneus Prime. But at the moment the Imperium was to claim victory, an unknown menace emerged from one of their Warp Gates, and soon six star systems of the Continuity burned. Overwhelmed by the vastly larger enemy force, Yonnad made the hard decision to destroy the Warp Gates, sparing the final system, but costing thousands of Imperial Fists' and billions of humans' lives, Araneus Prime survived, but barely. Now a smoking cinder, the charred remains of the devastated world, the Imperium gave the planet a new name -- Necromunda.
Compliance of 82-17 (Nova Shendak) Early in the Great Crusade, the War Hounds Legion had found three star systems under the thrall of giant xenos creatures who were both intelligent as well as hateful. Their weapons were filaments, metal feathers that they embedded in themselves to conduct potent bioelectrical energies out of their bodies. The War Hounds proceeded to burn them out of their colony nests and chase them back towards their homeworld. But on their cradle-world of Nove Shendak the XII Legion had, to their immense surprise, discovered humans. The War Hounds, alongside their fellow Legiones Astartes, the Iron Warriors, and a large contingent of Imperial Army soldiers were charged with exterminating the worms and liberating the humans of Nove Shendak. When the worms finally emerged from the earth to assault their attackers, they met the Emperor and His War Hounds. Though the casualties were horrendous, the War Hounds eventually emerged triumphant and the worms of Nove Shendak found only extinction. The people of that world inherited the planet and became fervent supporters of the Imperium.
ca. Late-850s.M30 Discovery of Primarch Lorgar Aurelian The Emperor comes to the world of Colchis to reunite with His lost son Lorgar Aurelian. Lorgar believes that his father, the Emperor, is a being worthy of devotion and begins to fervently preaches the divinity of the God-Emperor. He reshapes the XVII Legion in his image, and renames them the Word Bearers.
Discovery of Primarch Jaghatai Khan The Emperor of Mankind comes to the Feral World of Chogoris and reunites with His lost son Jaghatai Khan. Shortly thereafter, he is given command of the V Legion and remakes them into the White Scars.
ca. 857.M30 Discovery of Primarch Konrad Curze The Emperor of Mankind, alongside several of His Primarch sons, including Magnus the Red, Rogal Dorn and Fulgrim, as well as representatives from the Ultramarines Legion, come to the perpetually dark world of Nostramo and reunite with Konrad Curze. Shortly thereafter, Curze takes control of the VIII Legion, and molds them into the fearsome Night Lords.
ca. 865.M30 Battle of Rennimar This was a massive Imperial Compliance campaign conducted by the Imperial Fists Legion against the massive Ork WAAAGH! of the Over-Tyrant of Grel in the Rennimar System, who was himself already under siege by both the Death Guard and Space Wolves Legions. Rogal Dorn, alongside Captain Archamus, the commander of his Huscarl Honour Guard, lead a force of 10,000 Imperial Fists against the greenskin forces. Typical of the VII Legion, they established heavy-walled bulwarks on the planet Rennimar, which enticed the Orks to hurl themselves and futilely smash against the Imperial Fists' stalwart defences. This enabled the combined force of Legiones Astartes to utterly crush their xenos foes.
869.M30 Compliance of Molech The newly discovered Knight World of Molech is brought into compliance through a massive joint-Compliance operation between multiple Legiones Astartes (including the Luna Wolves, Dark Angels, Emperor's Children and White Scars). Cyprian Devine of House Devine is named Planetary Governor of Molech. In the presence of several of his Primarch sons, the Emperor leads them to a Warp portal located deep underground, where He proceeds to enter into the Realm of Chaos to parley with the Ruinous Powers. When He returns, the Emperor appears aged, but much more powerful. He then psychically suppresses his sons' memories of Molech and stations a large garrison force comprised of nearly 100 Imperialis Auxilia regiments, three Legio Titanicus cohorts, and detachments from two Space Marine Legions to protect the secrets of the Warp portal on Molech.
Mid-800s-890.M30 The Rangdan Xenocides The Titans of the Legio Gryphonicus as well as the Legio Vulturum, the Legio Kydianos and other Xanithe Mechanicum forces of Xana II, served alongside the vaunted Dark Angels Legion during the vital campaign known as the Rangdan Xenocides. The Dark Angels hurled themselves at the enemies and broke their greater strength in countless battles against the vile xenos on the edge of the Halo Stars. This campaign culminated in the Third Rangdan Xenocide around 890.M30, which resulted in the loss of the lives of 50,000 Space Marines spent in preventing the destruction of perhaps the entire northern Imperium by the menace from the outer darkness. Due to these extensive losses suffered by the I Legion, by 899.M30, the Ultramarines Legion were on the cusp of becoming the largest Space Marine Legion, standing at around 166,000 Astartes.
876.M30 Compliance of Zavarich The Feudal World of Zavarich, located within the Cyclops Cluster region, is brought bloodlessly into Imperial Compliance by the 611th Expeditionary Fleet. Shortly thereafter, Zavarich enters into operation as a fully managed Agri-World by the time of the Heresy, and is notable for being one of a relative handful of such worlds in the region.
891.M30 Crisis of the Hungering Gyre The Mechanicum forces of Gryphonne IV, along with their resident Legio Titanicus forces from the Legio Gryphonicus fought a hence unknown xenos menace known as the Hungering Gyre, and arose victorious amid great personal sacrifice. In recognition for their great service and sacrifices during this campaign, the Emperor decreed that Paramar V and its industrial facilities would be granted as a vassal domain to the distant Forge World.
Late-800s.M30 Discovery of Lascal This terrestrial world was discovered on the edge of the Grail Abyss by the 7th Expeditionary Fleet under Lord Commander Suleiman Grimm of the I Legion. Originally it had been a feral Ork holding before the Dark Angels exterminated the Ork infestation. Lascal became a forward outpost of the Great Crusade, and later a naval fleet anchorage was constructed there in orbit under the auspices of the Lucien Mechanicum. Continuing to grow, by 902.M30, Lascal had become an independent and self-sustaining Imperial colony.
891.M30 Discovery of Grail The Expeditionary Fleet of Rogue Trader Corthona Van der Veld discover an errant Dead World and names it Grail. This world's namesake is later given to the region known as the Grail Abyss, a place of hidden wealth and terrible danger which has long drawn Explorators and would-be treasure hunters to their graves.
899.M30 Xenocide of the Osiran Psybrids A sub-fleet of the XII Legion, under the command of Praetor Erad Krüg, was fighting on the south-western extreme of the Great Crusade's frontier near the Eurydice Terminal, against Ork raiders of the self-styled Glortian Empire from the untracked abysses beyond. As both sides fought one another, they were suddenly best upon by a mysterious third party -- the deadly xenoforms known as the Osiran Psybrids. As the nightmarishly powerful xenos teleported aboard the War Hounds' vessels, only their savage tenacity allowed them to survive, as they lost dozens of their own ships and hundreds of Ork vessels were shattered. Primarch Roboute Guilliman ordered the War Hounds to hold at all cost, and if possible, to track the Psybrids' vessels to their source. The Ultramarines despatched a powerful Retribution fleet to the Eurydice Terminal, and soon joined their fellow Legion. With their combined might, the Ultramarines systematically wiped out the Psybrids, and when they died, so too did their slave armies. They soon made short work of the remaining Glortian Orks as well, driving them into the outer darkness. The blood price of the battle had been high, but it was a price the Ultramarines were willing to pay for the defeat they suffered nearly six decades earlier.
ca. 900s.M30 Assault on Dulan As the Space Marine Legions pushed back the frontiers of the Imperium, each Primarch strove to excel in the eyes of the Emperor and none more so than Leman Russ, Primarch of the Space Wolves. Only Horus and Lion El'Jonson could claim more victories than Russ and this was a constant frustration for him. It was on the world of Dulan where the Space Wolves were fighting alongside the Dark Angels that matters came to a head. The Tyrant of Duran had personally insulted the Emperor, sacrificing thousands of Imperial priests to his patron daemon, and both Russ and Jonson desired the honour of slaying this Heretic. The Tyrant Durath insulted Russ, causing him to demand the right to lead the attack on the fortress. Johnson ignored him and led his own carefully planned attack instead, killing the Tyrant personally. After the battle Russ confronted and attacked Johnson, and the two dueled for a day and a night. Russ eventually stopped attacking, seeing the humor of the situation, at which point Johnson knocked him unconscious. Now he considered honour to be satisfied. The prostrate Russ was carried from the fortress by his men and, when he regained consciousness, the Dark Angels had already departed to fight in the Alisore campaign. Russ swore he would avenge the stain on his honour and, to this day, whenever the Space Wolves and Dark Angels meet, one of their number is called upon to refight the duel of the Primarchs in order that honour may be satisfied.
Compliance of Tarsis This was an Imperial Compliance carried out by the Ultramarines Legion upon the world of Tarsis against unknown assailants. During the assault the Primarch Roboute Guilliman was attacked by a mysterious assailant, but was saved by a native soldier of this world. In a supreme display of humility, Guilliman bent his knee before the soldier and vowed a warriors oath that should this world ever need aid then the Ultramarines would answer the call. A temple within the capital city of Erebus displayed the Tarsis Frescoe, a mosaic of enormous proportions painted by an unknown artist that covered the walls, ceiling and even the floor, covering the entire chamber like a canvas. This frescoe displayed the events that had occurred during the Great Crusade. In gratitude to Guilliman and the Ultramarines, the planet renamed itself Tarsis Ultra in honour of its saviours.
Shi'Hu'Gal Purge The Night Lords, supported by the Titan Legions Legio Vulcanum I ('Dark Fire') and Legio Vulcanum II, carried out the infamous xenocidal purge of the Shi'Hu'Gal Dominion during the Great Crusade; this was a campaign of such fury and viciousness it remains a legend of this bygone era, even after the far greater death and destruction caused by Horus' betrayal of the Emperor.
Compliance of Tethonus The Luna Wolves Legion fought against an unidentified xenos-adversary whose identity is not recorded in existing Imperial records while bringing the world of Tethonus into Imperial Compliance. This Compliance action was a long siege of the xenos fortress-states on Tethonus. Horus had tasked the masters of the Forge World of Diamat to create continental Ordinatii siege machines; vast artillery pieces that could devastate the most powerful fortifications. But the war machines took much longer for the forge masters to complete than planned. By the time they were finished, the campaign on Tethonus had been over for over a standard year and a half, and Horus had moved on to other conquests. So the weapons were put into a depot on Diamat against the day when he would come to claim them. Fifty standard years later, Horus would reveal his perfidy at Istvaan III, and would send raiding forces to claim these siege engines for later use in his attempt to overthrow the Emperor of Mankind.
Assault on Dahinta On the world of Dahinta, the Luna Wolves Legion fought against a race of self-aware machines called the Overseers, who were led by the artificial intelligence known as the Archdroid. One of the Emperor's longest-standing commands was that no sentient machines could be allowed to exist, for they had nearly caused the extinction of Mankind when they had rebelled against their human overseers during the Dark Age of Technology. Despite heavy casualties amongst, the thinking machines were wiped from the face of Dahinta by the savagery of the Astartes. Only after the campaign had ended was the full truth learned: the Overseers had been created by a vanished offshoot of humanity that had settled Dahinta, perhaps during the Age of Technology. The Overseers had cared for their lost masters' crumbling cities long after they had become extinct or left their homeworld behind.
Compliance of Five-Twenty-Nine This was an Imperial Compliance action carried out by the Alpha Legion against an adversary of unknown origin upon the world designated Five-Twenty-Nine.
Compliance of Fernius Worlds This was an Imperial Compliance action carried out jointly by the Alpha Legion and an Imperial Army sentry force comprised of the Geno Seven-Sixty Spartocid. The Seven-Sixty were a well-drilled regiment and did not spook easily. They played an instrumental role during the Compliance of the Ferinus Worlds.
Compliance of Thorium Abominiplex This was an Imperial Compliance action that was carried out jointly by both the Alpha Legion and Death Guard Legions against an unrecorded adversary.
Xenocide of Kamenka Troika This was a campaign of extermination waged in the middle years of the Great Crusade against the barbaric Orks of the Kamenka Troika system. The Emperor had issued the writs of war, commanding the Thousand Sons, the Legio Astorum Titan Legion and a Lifehost of PanPac Eugenians of the Imperial Army to drive that savage race of xenos from the three satellite planets of Kamenka Ulizarna, a world claimed by the Mechanicum of Mars. The savagery of that war, the slaughter and relentless, grinding attrition had left tens of thousands of dead in its wake. The Imperial forces proved victorious after two standard years of fighting and earned a score of honours for their war banners. Victory had been won, but the cost had been high. The Thousand Sons sustained severe losses of 873 Battle-Brothers of the 5th Fellowship, effectively wiping the 5th out as a functioning unit. This forced Magnus the Red to reduce his Legion from ten Fellowships to the Pesedjet, the nine classic Fellowships of Prosperine antiquity.
Liberation of Alpha Shalish It was during the XII Legion's campaign in the Golgotha Sector that the World Eaters' 203rd Expeditionary Fleet encountered the Lacrymole-infested world of Alpha Shalish. Remembrancers and Imperial artist-scribes of the 203rd Expeditionary Fleet recorded the auspicious events surrounding the liberation of the xenos-controlled world of Alpha Shalish. The Imperial forces, spearheaded by World Eaters Space Marines, burst into the mounded Lacrymole cities with righteous fury, cleansing the planet of their foul, man-eating kind with extreme prejudice.
The Carinae Retribution The conquest of the Carinae Sodality remains a black mark on the record of the Raven Guard, a campaign whose details, long suppressed by factions within the Officio Militaris, show the Raven Guard as directly responsible for the campaign's delay and the excessive casualties recorded by Imperial Army units assigned to the fighting. The Raven Guard were assigned to pacify the "Thousand moons of Carinae" -- immense void-cities that circled the otherwise planet-less primary. On one such moon, designated Zenith-312, the cities' Arch-Comptroller unleashed a terrible weapon -- an anima-phage of terrible potency that rendered men into creatures of rage and hunger, bereft of all reason and memory. The Raven Guard suffered little ill-effect, but the ordinary citizens of Zenith-312 and the mortal soldiers of the Imperial Army were reduced to a frothing, mindless horde that numbered in the tens of thousands. Immediately the Raven Guard found themselves beset on all sides, and were forced to put down those who they once called allies, granting them the mercy of death. In revenge, Corax hunted down the escaped Arch-Comptroller, and enacted a brutal and long, drawn-out death. But in their need for revenge, the Raven Guard were neglectful in their duty, allowing for the other moons to fortify themselves, drawing out what was supposed to be a relatively swift Compliance, for seven long solar months, costing thousands of Imperial lives in the process.
The Fall of the Lords of Gardinaal The Gardinaal was a solar empire comprised of eleven inhabited worlds encountered at the edge of the Dominion of Storms to the galactic east. They were an empire who possessed a considerable might of arms, enough to give even the Expeditionary Fleets of the Great Crusade pause. When an honour guard of Thousand Sons were sent to meet with the lords of Gardinaal, at first the negotiations went well, but unfortunately, the Thousand Sons were able to detect a psychic attempt to subvert the Imperial emissaries. The nearby Ultramarines 413th Expeditionary Fleet, commanded by Master Ulan Cicerus of the XVth Chapter, was forced to intervene militarily. But soon their gains were forestalled by the superior defences of Gardinaal Prime, which proved disastrous, as they utilised powerful STC weaponry and vehicles never encountered before. A blockade of the Gardinaal's system was employed. The stalemate was soon broken by a new war-host led by the Iron Hands and the Emperor's Children Legions. The Emperor's Children contingent led a diversionary attack, while the Iron Hands led a relentless and tireless assault spread over every entire world. The Ultramarines requested to lead the assault on the capital city to restore some of their lost honour, though the blood price they paid was steep. The Iron Hands fleet left the Gardinaal System shortly afterwards, its other inhabited worlds pleased to surrender unconditionally to the Imperium's mercy. Though initially faced with famine and hardship, Gardinaal soon proved a valuable addition to the Imperium and a model of Imperial Compliance.
Defence of Necromunda At some unknown date later in the Great Crusade, the Imperial Fists won a major victory against the Orks upon the ash wastes of the Hive World of Necromunda. The Hive Lords consented to recruits being drawn from their population in gratitude and a Fortress-Chapel was duly consecrated, but the Imperial Fists continued to refuse to accept any special rights on the worlds where their Legion recruited. Throughout the Great Crusade they refused to garrison or claim tithes of newly conquered worlds, instead opting to remain a military unit with none of the responsibilities that came with ruling a single homeworld.
The Krypt Persecution The Compliance of Krypt was a relatively short campaign conducted during the Great Crusade by both the Death Guard and the Luna Wolves Legions against the Orks upon the frozen plains of the world of Krypt. Fighting together for more than a week across the frozen surface of the planet, the Space Marine Legions turned the blue ice dark with xenos blood. Battle-Captain Nathaniel Garro and his 7th Great Company were known to have fought alongside the Luna Wolves' Captain Garviel Loken and his 10th Company during this action.
Battle of Gyros-Thravian The Battle of Gyros-Thravian was a massive joint-Imperial Compliance action carried out by three Space Marine Legions, composed of the Luna Wolves, Death Guard and Imperial Fists against the extremely powerful Ork Warboss Gharkul Blackfang, one of the most powerful Ork warlords ever encountered up until that time. Despite the strength arrayed against the vile Greenskin, it was the Imperial forces who were soon on the verge of defeat. It was then that the Emperor Himself, aboard his flagship. Bucephelus, came to the aid of His sons. He personally led a force composed of 1,000 Legio Custodes into the heart of the mighty Ork horde. Blackfang was confronted by the Emperor and killed atop his Gargant while the Custodians proceeded to lay waste to the rest of the Greenskin horde. The Custodians accounted for the slaughter of the Orks, slaying over 100,000 of the savage xenos, with the loss of only three Custodians. Following their momentous victory, the Emperor commemorated the Custodians' sacrifice by engraving the names of the three fallen into His own personal Artificer Armour.
X173 Plural Xenocide This was an Imperial Compliance campaign of the Great Crusade that was carried out jointly between the White Scars Legion and the 40th Expeditionary Fleet's Imperial Army component made up of the genetically-enhanced soldiers of the G9K Division Kill upon the world designated X173 Plural. This campaign against unknown xenos was fought over a period of six months, in which the troops of the G9K came to admire the focus, dedication and mercilessness of the White Scars.
902.M30 Subjugation of Kaldorax Aleph The Iron Warriors 118th & 3rd Grand Battalions undertake the forced subjugation of Kaldorax Aleph, but sustain a high blood price to achieve victory, suffering nearly 65% casualties, though the Iron Warriors absolutely crush the non-Compliant forces of the intransigent world.
903.M30 Compliance of 47-10 (Khur) The Word Bearers successfully bring Khur into Imperial Compliance approximately a Terran century before the events of Istvaan III at the outset of the Horus Heresy. The beautiful capital city of Khur, known as Monarchia, called the 'Perfect City' by the Word Bearers, was built by the people of Khur at the direction and exhortation of the XVII Legion to demonstrate their faith and devotion to the God-Emperor.
Early 900s.M30 Discovery of Primarch Angron The Emperor arrives at the world of Nuceria, where He observes His long-lost son, Angron Thal'kyr, lead a revolt of slave-gladiators against their cruel overlords. Angron had been found as a young adolescent and sold into slavery. He then underwent horrific surgery, where barbaric cranial implants were hammered into his brain. Thrown into the fighting pits for his masters' pleasure, he soon rose to the top, and became the Lord of the Red Sands. On the eve of the largest exhibition, Angron led a successful revolt and breakout of many of his fellow slave-gladiators. Taking refuge within the De'shea Mountains, on the eve of their final confrontation with their cruel overlords, Angron dug his own grave, ready to die alongside his brothers and sisters in the name of freedom. But before the battle took place, the Emperor intervened and teleported Angron aboard his own flagship. Angron's fellow gladiators were slain to a man. Angron was then examined and given over to his genetic sons from the XII Legion. After assuming command, he reshaped his Legion into his own image, and they became the World Eaters.
Early 900s.M30 Golgothan Slaughter - Siege of Sarum The first known target to suffer the wrath of the World Eaters Legion after their Primarch Angron took command, was the stellar wasteland of the Golgotha Sector, located near the galactic core in the Segmentum Ultima, close to the realspace Warp rift known simply as the Maelstrom. Here, the World Eaters came upon the Sarum Sector, and the Forge World of Sarum, which was being besieged by the Abhuman empire known as the Brotherhood of Ruin who wished to take the Mechanicum's technological secrets for themselves. The World Eaters immediately launched a brutal assault upon the abhuman army and brutally slaughtered them. The Redjak Cult Mechanicum Tech-Priests swore to Angron and his Legion directly many oaths of fealty and entered pacts of mutual protection and support. This provided the World Eaters and their Techmarines with a ready source of resupply and armament far outside the Imperium's inner sphere. The campaign that was to follow would last eleven standard years and see no fewer than 48 worlds and outposts ravaged and destroyed by the World Eaters, and 7 separate dangerous xenos species, including a branch of the Lacrymole, rendered extinct as the XII Legion's fleet cut a swathe of destruction through the wastes of Golgotha, and even into the Maelstrom itself.
Early 900s.M30 Ghenna Massacre As the Great Crusade wore on there were increasingly those in the Imperial military who whispered that Angron was mad and his Legion had followed him into madness. These whispers were voiced as widespread discontent and demands for censure when stories began to circulate that Angron had ordered his Apothecarion to conduct widespread psycho-surgery, implanting the so-called Butcher's Nails cranial implants into his Astartes, after the infamous Ghenna Massacre came to light. This action, undertaken at Angron's instigation, resulted in the entire planetary population of Ghenna that had rebelled against its Imperial Commander being exterminated in a single night of extraordinary bloodshed. The psychic screams of the dying were reported to have been audible by Astropaths half a sector distant.
Early 900s.M30 Night of the Wolf After the events on Ghenna, the Emperor was moved to act and called Angron before Him for reprimand. He sent Leman Russ and his Space Wolves to Ghenna, to force Angron to submit before them and be brought back to Terra for judgement and censor. Russ warned Angron that the Emperor had ordered the end of such prohibited surgery in the XII Legion. Though the Wolf King tried to talk sense into his blood-maddened brother, Angron refused to listen to reason. Eventually, with tensions rising on both sides, an inevitable confrontation took place. No one is exactly sure who started the melee, but Russ wisely chose to order his Legion to withdraw, as both Legions faced mutual annihilation if they continued their course. The World Eaters were later issued with orders to depart to the northern fringes of known space, there to harry and reave against xenos far from the Imperium's core worlds.
921.M30 Keylek Genocide Early in the Great Crusade the Luna Wolves encountered the hostile alien reptilian race known as the Keylekid on the world of Keylek. The grotesque Keylekid were greatly skilled in the arts of combat, and rose against the XVI Legion angrily the moment the 63rd Expeditionary Fleet made contact. This genocidal campaign proved to be a long, bloody, and miserable affair for the Luna Wolves.
927.M30 The Cryptosi Purgation When an exotic, meta-dimensional strain of xenos thought to be the species later referred to in some accounts as the 'Cryptosi', a sub-company from the Alpha Legion was sent to the Imperium's northern reaches to investigate atrocities that had been committed. This campaign appears not to have been committed to record, although contact with colony worlds in that region was lost soon after, seemingly as a result of Legiones Astartes activity.
933.M30 Third Temporaferrox Extermination The Iron Warriors 33rd Grand Battalion successfully conduct a successful xenocide campaign against the Temporaferrox xenos, though they suffer 78% percent casualties, all xenos life-forms are destroyed. The Iron Warriors high command deems these losses as acceptable.
941.M30 Compliance of 63-8 (Davin) The Feral World of Davin is brought into Compliance by the Luna Wolves Legion. The warrior tribes were allowed to remain mostly intact as they had impressed Horus with their courage on the battlefield and their willingness to learn to adapt to Imperial culture. The Luna Wolves departed after the surrender of the Davinites, taking with them their concept of the Warrior Lodge, which were quickly adopted throughout the Luna Wolves fleet. A detachment of the XVII Legion, the Word Bearers (then known as the "Imperial Heralds"), under the command of First Captain Kor Phaeron was left to shepherd the people of Davin into the light of the Imperial Truth. The Imperial governorship of the planet was given to Commander Eugen Temba of the Imperial Army, a close friend and confidante of Horus.
942.M30 Colonisation of Gethsamaine The world of Gethsamaine is found by Merchant Fleet Captains on the far edge of the Cyclops Cluster. It was accidentally discovered after a Chartist liner went off-course in an attempted passage of the void between M'Pandex and Zarnov. Gehsamaine was found to be a lush, primordial world of steaming rain forest filled with primitive flora, but where animal life had not yet developed. It was immediately identified as a prime location for colonisation, and soon numerous warp-arks filled with teeming hives of the Segmentum Solar colonised the newly discovered world. Gethsamaine was founded with the hopes of becoming the cornerstone of a new spread of human expansion to further consolidate and exploit the nearby stars.
ca. 945.M30 Battle of Sigma 51-7 (Sarosh) Shortly after their entry into the Great Crusade the 4th Expeditionary Fleet of the Dark Angels reached the orbit of the planet Sarosh (officially codified as Sigma Five-One-Seven), which had formerly been commanded by an officer of the White Scars Legion. The Saroshi -- ruled by a bureaucracy -- had recently expressed their interest in becoming part of the Imperium, and the Imperials were eager to allow them in, believing that these people seemed to express the same secular beliefs as they did in the Imperial Truth. But the Saroshi (without mentioning it to the Imperial expedition) secretly worshipped Chaotic entities in the Warp they called the Melachim, and saw the anti-religious stance of the Pre-Heresy Imperium's Imperial Truth as unsuppressed evil. The Lord High Exacter, the leader of the Saroshi bureaucracy, denounced Jonson and the Emperor to the Primarch's face aboard the Dark Angels' flagship, and Lion El'Jonson responded by ramming his blade, the Lion Sword, through the fanatical Saroshi leader's body. Unknown to the Dark Angels, the Saroshi had secreted a nuclear device aboard their shuttle, intending to assassinate the fleet's entire command structure, including Jonson; however, Luther and a junior Librarian named Zahariel managed to eject the shuttle into space, causing only minor damage to the flagship. After this incident, Luther, Zahariel and five hundred other Dark Angels were sent back to Caliban in disgrace, for allowing an enemy to get a nuclear device aboard the Primarch's flagship, to oversee the recruitment of new Space Marines into the Legion from the Calibanite population
ca. Late 940s.M30 Discovery of Primarch Corvus Corax The Emperor comes to the prison moon of Kiavahr's moon of Lycaeus, now renamed Deliverance, and reunites with His lost son Corvus Corax. He recruits his son, and after a short time together, gives him command of the XIX Legion. Corax quickly transforms his Legion into his own image and renames them the Raven Guard.
ca. 957.M30 The Melkeji Salvation The world of Melkeji was a planet on the trailing edge of the galactic rim which had retained many of the technological marvels of Mankind's Dark Age of Technology. Unfortunately, the human population was enthralled to nameless parasitic xenos creatures that ruled Melkeji through a class referred to as the Ascended. Knowing that they could not capture the planet, the Grand Marshal of the Expeditionary Fleet sent an Astropathic message asking for aid. Lorgar himself came to Melkeji with eight full Chapters of his XVII Legion. Through Lorgar's tactical genius and superb guile, he overwhelmingly defeated the vile xenos. The people of Melkeji knew that their masters were gone and that they were facing a power greater and more terrible than any they could have dreamed in their wildest nightmares. Most of the Melkeji surrendered at that moment, the rest a few days later. A decade after, Melkeji was a world faithful to the God-Emperor. Nearly a decade later, half a million of its sons and daughters would come to Ultramar in 007.M31 with the names of alien gods on their lips and aid the Word Bearers in the assault upon Calth.
962.M30 Pacification of the Saryine Compact The Iron Warriors 282nd Grand Battalion successfully conduct the Pacification of the Saryine Compact, reducing rebellious garrison forces to 30% effective strength. The 282nd Grand Battalion suffers only 32% casualties, which leads the Battalion command to being censured for lack of zeal.
964.M30 The Razing of Monarchia Monarchia was the name of the capital city of the planet Khur, built as a beautiful shrine to the God-Emperor by the XVII Legion, the Word Bearers, earlier in the Great Crusade. Monarchia, along with its false temples, was destroyed by the warriors of the Ultramarines Legion as an object lesson in the folly of false religion. The entirety of the XVII Legion was then forced to kneel in the ashes of their devotion by the psychic power of the Emperor Himself, while the Ultramarines stood over them in judgement -- that which they had seen as worthy devotion now labelled treasonous. Suffering such a humiliating rebuke at the hands of the Ultramarines, this insult would apparently fester within the XVII Legion and drive them willingly into heresy.
965.M30 Compliance of 47-16 Forty-Seven Sixteen was the first world brought into Imperial Compliance after the rebuke of the Word Bearers by the Emperor on the world of Khur. The lost human world had at first rejoiced to be reunited with their long-lost brothers from the stars. But the Word Bearers immediately initiated military action in the form of an orbital bombardment that wiped out nearly every single city with the exception of one. The now corrupted XVII Legion used the excuse that they did not have the time necessary to convert the population of Forty-Seven Sixteen to the Imperial Truth, and since their supposed profane beliefs were deemed incompatible with the Imperium's order, the world of Forty-Seven Sixteen would have to be purged. The Primarch dismissed the fact that the people of this world worshiped the Emperor as a God and that they had somehow obtained a copy of the Lectitio Divinitatus, scribed by Lorgar himself. The people of Forty-Seven Sixteen were condemned, for ignorance was no excuse for violations of the Imperial Truth.
This is an action that was carried out by the Space Wolves Legion.<ALL DATA REDACTED>
966.M30 Discovery of Cadia During the so-called "Pilgrimage of Lorgar", the spiritual quest undertaken by the Primarch Lorgar and his XVII Legion to commune with the Dark Gods. The Word Bearers' pursuit of any scrap of information that could be found on the Primordial Truth or the nature of the place where Gods and mortals could mingle ultimately led the 1301st Expeditionary Fleet to the Cadia System near the largest permanent Warp Storm in the galaxy, later known to the Imperium as the Eye of Terror. The Word Bearers laid anchor over an unknown world. They later made planetfall on the newly discovered planet, which they designated as 1301-12. There, they discovered the chaos-worshipping population. It was on Cadia that Lorgar first met Ingethal, a Daemon Prince of Chaos, who was appointed by the Ruinous Powers as a guide for Lorgar and inducted the naive Primarch into worshipping Chaos. This would lay the seeds for setting in motion the events that brought on the cataclysmic Horus Heresy nearly four decades later.
ca. Mid-900s.M30 Battle of Byzanthis A Dark Angels' Expeditionary Fleet, under the command of Chapter Master Merir Astelan discovered the far flung world of Byzanthis during their exploration of system DX-619. Following this discovery, another Dark Angels force, under the command of Chapter Master Belath arrived in-system. The two opposing Dark Angels commanders advocated different approaches in the compliance of the newly discovered world -- Belath wanted to use military forces, while Astelan preferred to try diplomacy to win over the planet's population. However, hostilities soon broke out after an engagement between the Dark Angels and defence forces of Byzanthis, which the Legionaries easily dominated. Determined to continue a diplomatic approach, Astelan went before the Byzanthis government to plead his cause for Byzanthis to accept the Imperial Truth and join the Imperium. The proceedings were interrupted when Belath teleported directly into the session with a Terminator retinue, who proceeded to slaughter the Byzanthis delegation. Enraged, Astelan knew war was now inevitable. A campaign was fought that eventually forced Byzanthis into Imperial Compliance.
This is an action that was carried out by the Space Wolves Legion.<ALL DATA REDACTED>
970.M30 Pacification of Zaramund A joint-Compliance campaign is conducted by the Luna Wolves and a contingent of Death Guard led by First Captain Calas Typhon and a contingent of Dark Angels led by Luther, the acting Regent of Caliban. Following their victory, a celebration is held, but soon the festivities are marred when Primarch Lion El'Jonson arrives to rebuke Luther for disobeying his orders to remain on Caliban.
ca. 972.M30 The Farinatus Extermination The Night Lords and Raven Guard participate in a join-Imperial campaign known as the Farinatus Extermination.<RECORDS NOT AVAILABLE>
The Breg-shei Eradication On the world of Farinatus Maximus, a detachment of the Raven Guard under Commander Alkenor carry out a Writ of Annihilation against the xenos-species of the Breg-shei -- highly dangerous and hostile insectoid aliens which had evolved there. Operating alongside the VIII Legion, the Night Lords, the Raven Guard infiltration team led by Sergeant Dravian Klayde charged with collapsing the breg-shei's nest was discovered and killed but for the tenacious Sergeant. Having lost one arm and both of his legs, Dravian Klayde however succeeded in reaching Imperial lines, dragging himself by his sole functional arm for days on end. This feat earned him the nickname of "The Carrion", bestowed upon him by the Night Lords who found him. Klayde would undergo extensive augmentic repairs which ultimately led him to be selected for training as a Techmarine on distant Mars, thus allowing him to be present during the Schism of Mars and play an important role in it.
ca. Late-970s.M30 Persecution of Vaomir Reaches Encountered through highly unusual circumstances, the Night Lords take part in the protracted persecution of the void-born Gethora Warp-Witches across the Vaomir Reaches. This was done due to the Emperor's standing edict that any Alpha-level rogue psykers that were encountered were to be destroyed outright, either through Exterminatus from orbit without direct confrontation or hunted down and slain with due prejudice. Therefore, the truth of Chaos and those who promulgated such beliefs would be kept from being revealed and casting doubt on the Emperor's extorted tenets of the Imperial Truth.
976.M30 Compliance of Dwell The world of Dwell was brought into Imperial Compliance by the Ultramarines Legion, led by Roboute Guilliman himself. This world, settled during the Dark Age of Technology by settlers from Molech, and contained a vast repository of information that would later lead the Chaos-corrupted Horus to Molech in search of the origin of the Emperor's power.
ca. Late-970s.M30 Discovery of Primarch Alpharius Omegon Extant accounts state that Alpharius was discovered accidentally by the Luna Wolves when they were lured into a trap after receiving a distress beacon from one of their own battleships. When they went to assist, Horus's own flagship came under attack by an unknown enemy, and a single assassin broke into the flagship and fought his way clear to Horus' command chamber. Horus himself was forced to confront him, but thankfully, did not slay his attacker but recognised him instead as his lost brother; Alpharius. Unfortunately, the validity of this account is considered highly suspect.
981.M30 Primarch Alpharius assumes command of the XX Legion
The Burning of the Pharun Drift The Iron Warriors of the 3rd, 14th and 72nd Grand Battalions successfully conduct the subjugation of the rebellious population of the Pharun Drift, suffering an overall casualty rate of 42%. The 3rd Grand Battalion suffers 80% casualties. All target worlds are depopulated. These losses are deemed acceptable by Primarch Perturabo.
984.M30 Pacification of the Cheraut System Following the successful joint-Compliance by the Night Lords, Emperor's Children and Imperial Fists of the Cheraut System, the three Primarchs met in celebration. After the celebration, the Night Lords Primarch suffered one of his violent fits that often plagued him, and Fulgrim rushed to Curze's aid. The Night Haunter then confided in his brother the dire visions that he had seen; his death at the hands of their father, that many of the Primarchs would die fighting amongst themselves, and that the light the Emperor brought to his homeworld of Nostramo would destroy it forever. Troubled by these dire portents, Fulgrim confided in his brother Rogal Dorn. Dorn took exception to this slight on the Emperor's name and confronted Curze. Shortly thereafter, Dorn was found unconscious and bleeding with great gouges of flesh ripped away from his torso. Crouching above his fallen brother was the pallid form of the Night Haunter, weeping. Wracked with self-loathing and guilt, Curze was taken into custody and exiled to his chambers, while his brother Primarchs discussed what actions to take against their deeply disturbed brother. Hours later, when the council of Primarchs finally disbanded, they found Night Haunter missing and the Imperial Fists' honour guard watching over him butchered. By the time the Primarchs gave chase, Night Haunter had already disappeared with his Legion into the Warp.
The Destruction of Nostramo The destruction of Nostramo was an Exterminatus action conducted by the now-rogue Night Lords Legion after the Night Haunter's attack on Rogal Dorn towards the end of the Great Crusade, after the pacification of Cheraut. The VIII Legion willingly destroyed their own homeworld of Nostramo on the order of their Primarch, concentrating deadly lance-strikes on the planet's unstable core which resulted in tumultuous seismic activity that eventually shattered the dark planet apart in a wave of destruction. This event fulfilled the Night Haunter's vision of seeing his planet being destroyed by beams of white light that erupted from the heavens. For this crime, Curze was recalled to Terra by the Emperor to be reprimanded for his brutal tactics, but instead he joined the Warmaster Horus in open rebellion during the Horus Heresy before he could stand before his father.
989.M30 The Hunting of the Ak'Haireth In 986.M30, reports of attacks against isolated outposts and shipping in the region of the stellar wastes near Olmec indicated that the Ak'Haireth were again dangerously growing in strength and number. The Alpha Legion were assigned the order for the xenocide of the species before it could spread further. Within three sidereal years, they accomplished this feat by working in conjunction with the Magos Biologis and creating a deadly bio-weapon that poisoned their source of the 'Bone Drinkers' nourishment -- the humans that lived on the worlds and plied the stars between those planets. The malignancy of the virus caused those Ak'Haireth that fed on them, and the generations born of them in the centuries to come, were irrevocably wiped out.
ca. 990.M30 Xenocide of the Khrave Corvus Corax and his Raven Guard Legion were deployed in the far galactic north, pressing the Great Crusade's expansion past the reaches of the Segmentum Obscurus, when they discovered Indra-sûl, and the greatest Khrave dominion encountered so far in Imperial history. The Khrave were a dangerous species of psychically-gifted xenos that preyed on human worlds, enslaving entire populations to feast on them and thus strengthening themselves. After a protracted and bloody campaign, Corax successfully wipes out the Khrave and liberates Indra-sûl from their xenos masters. Unknown to the Raven Guard, the Iterators and other Imperial servants following on the heels of the XIX Legion's advance would later condemn the survivors to a living death as Servitor labourers, seeing them as corrupted in both mind and body.
Mid-900s.M30 Siege of Barrakan This was an Imperial Compliance carried out by the Dark Angels during the Great Crusade against the Orks on the world of Barrakan. A notable campaign of this Compliance action was the defence of Firebase Endriago. A Chapter of the Dark Angels had been cut off by the Greenskins and trapped at the firebase for 18 months. By the end, the beleaguered Astartes were fighting off the alien assaults with fists and pieces of sharpened steel scavenged from bombed-out strongpoints, but through it all Brother Nemiel had never wavered. He had taunted the Greenskins relentlessly and exhorted his brothers to acts of ever-greater defiance in the face of insurmountable odds. When a Greenskin's crude axe had shattered his knee he had grabbed the beast by one of its tusks and kicked it to death just for spite. When the last line of defence was broken, he had stood his ground in the face of a massive xenos champion and fought an epic duel that had given the Chapter time to launch a counter-attack that finally exhausted the last of the enemy's strength. The next day, when relief forces finally managed to fight their way through to the firebase, Nemiel had stood on the ramparts and cheered with the rest of his brothers. It took several minutes before he registered the slaps on his shoulders and back and realised that the Chapter was not cheering for victory -- they were cheering for him. Not long after, the Chapter voted unanimously for him to take the place of Brother-Redemptor Barthiel, who had fallen during the darkest hours of the siege.
994.M30 Compliance of the Istvaan System One of the more notable campaigns carried out by Primarch Corvus Corax and his Raven Guard Legion during the Great Crusade was the Imperial Compliance of the Istvaan System in 994.M30, located in the northern reaches of Segmentum Ultima. The Istvaan system had required force to impose compliance so an outlander was chosen rather than a local to rule, and this task was given to Vardus Praal, formerly a Major of the XIth Lastran Rifles and later career politician of the Ultima Segmentum Court.
ca. 995.M30 Pacification of the Hith System Approximately a decade prior to the events of the Istvaan III Atrocity, the pacification of the Hith System against the Orks of Charhack was the largest concentration of Imperial military force, which comprised well over 200,000 Space Marines, although exact figures could not be corroborated. These Legiones Astartes fought alongside Titan support from the Legio Mortis, Legio Audax and Legio Vulpa and a number of Imperialis Auxilia units.
ca. 997.M30 Subjugation of Kernunnos This was in Imperial Compliance carried out by the Wolf Lord Bulveye of the 13th Great Company and the Imperial Army contingent known as the Arcturan Dragoons against the world of Kernunnos located in the Lammas Sector. When the 954th Expedition came to the Lammas Sector, they brought good tidings and the Imperial Truth from the Emperor. But despite the Wolf Lords' open-handed gesture of peace, the twelve ruling self-styled Tyrants of Lammas spat upon his gesture of peace and unity. Seven standard years later, their fleets lay broken and their armies scattered. The Tyrants were stripped of their position of power and all their pilfered wealth would be used to help rebuild what was lost, and ensure that the worlds of the Lammas Sector became prosperous and stable members of the Imperium.
998.M30-005.M31 Suppression of the Gordian League The Dark Angels Legion fought this compliance campaign against the Gordian League -- a confederation of human worlds who were allied with degenerate xenos. The Dark Angels were still bogged down during this campaign in 005.M31, when they received word of Horus's treachery at Istvaan III, as well as the secession of the World Eaters, Emperor's Children and Death Guard Legions. Lion El'Jonson believed that the Dark Angels' deployment to the Shield Worlds was part of an effort to scatter the Imperium's most loyal servants as far as possible in order to minimize the number of Legions Horus would have to face at any given time. Jonson's forces were too deeply enmeshed in the Shield Worlds to respond quickly to Horus's treachery; the best estimates of the Primarch's staff indicated that it would take them nearly eight months to conclude their offensive operations, even on an emergency basis, and reposition themselves for a strike against Istvaan V. The Primarch issued orders for many of their reserve squadrons to resupply and prepare for immediate deployment to the Tanagra System. Their primary target was to secure the Forge World of Diamat. They could not afford to let the Warmaster acquire the substantial supplies and ordnance needed to fortify the world of Istvaan V against the approaching Loyalist strike force. Jonson would personally lead the expedition to Diamat, with a battle group of fifteen warships.
ca. 999.M30 Compliance of Melchior The Imperial Compliance of Melchior was a joint campaign that was carried out by both the Luna Wolves and the Blood Angels Legions. The world was the last bastion of the xenos known as the 'Nephilim' -- a parasitic xenos race that slowly fed on humans and had claimed a hundred worlds before they had come to rest upon Melchior. Even their name, Nephilim, the name of the fallen seraphs, was a name taken from ancient human mythology. The Luna Wolves and Blood Angels stood shoulder-to-shoulder brought their full unfettered wrath down upon the upstart xenos. Caught between the brutal fury of two Space Marine Legions on Melchior's shining sands, the Nephilim were finally put to the sword.
Pacification of Aghoru The Aghoru Campaign was an Imperial Compliance action carried out by the then-loyal Thousand Sons and a small contingent of the Space Wolves Legion in the waning years of the Great Crusade. Though Imperial Compliance was successfully accomplished through diplomacy and considered a success, soon notable combat action took place between the Thousand Sons and an apparent warp denizen infestation (beings known to the local population as 'Elohim') within the subterranean passages of the vast artificial peak known as "The Mountain") which the Space Wolves helped to put down.
The World-Prince Campaign This was one of the final campaigns fought by the Imperial Fists during the waning years of the Great Crusade upon an unnamed Hive World against a non-Compliant civilisation ruled over by a monarch known as the World-Prince. Initially, the World-Prince had refused to surrender to the Imperium and stubbornly resisted the efforts of the Imperial Fists led by Lord Dorn himself. The Imperial Fists systematically fought one hive at time, and were making slow by study progress, until the Alpha Legion arrived unexpectedly. Informing their fellow Legion that they were there as allies, the Alpha Legion immediately began to begin operations against the intransigent world. Though no Alpha Legion warriors were encountered by the Imperial Fists during the campaign on the ground, their signature passing was abundantly clear, as soon, uprisings and coups began to erupt across the remaining hives, which threw the beleaguered world into absolute anarchy. Following the death of over 400 members of the World-Prince's nobility, he capitulated to Lord Dorn. Enraged, Rogal Dorn confronted Alpharius and scorned him for his disreputable way of waging war. He then ordered the Alpha Legion to cease all operations and to leave the planet. In one final act of spite, Rogal Dorn also proceeded to lay out the Alpha Legion's entire plan, and poked holes in its overall effectiveness, before walking away in disgust.
Compliance of 670-25 (Nurth) The Alpha Legion responds to request for aid from the 670th Expeditionary Fleet to take part in the Imperial Compliance of the world of Nurth. Unfortunately, the planet is lost when a Chaos-tainted local military force, known as the Echvehnurth, activated a Warp-tainted artefact known as a Black Cube, as a last act of defiance. Once activated, Nurth was transformed into a world inimical to all sentient life nearly overnight, nearly wiping out all Imperial forces on the ground.
The Pacification of Ark Reach Secundus The Ark Reach Cluster had been discovered by the Word Bearers Legion's 47th Expeditionary Fleet; it was a group of binary stars occupied by a number of belligerent planetary empires that rejected the Imperium's offer to become part of the Emperor's growing demesne. This Imperial Compliance action of the Great Crusade was carried out through the combined efforts of the Thousand Sons working in concert with elements from the Space Wolves and the Word Bearers Legions. The first four star systems fell to the Word Bearers and Space Wolves. But the fifth and sixth world, known as Shrike, required the assistance of the Thousand Sons. The return to the XV Legion of the dreaded mutational "flesh-change" occurred at the conclusion of this campaign and helped to bring on the eternal enmity between the Space Wolves and the Thousand Sons, as the Space Wolves increasingly regarded the Astartes of the XV Legion as "impure".
ca. 999.M30-000.M31 The Ullanor Crusade The Ullanor Crusade was a vast Imperial assault on the Ork empire of the Overlord Urrlak Urruk, the largest such greenskin empire every encountered in mankind's history at that time. The Crusade included the deployment of 100,000 Space Marines, 8,000,000 Imperial Army troops, and thousands of Imperial starships and their support personnel. The Ullanor Crusade marked the high point of the Great Crusade's vast effort to reunite the scattered colony worlds of humanity.

See AlsoEdit


  • Codex: Angels of Death (2nd Edition)
  • Codex: Chaos Daemons (6th Edition), pg. 20
  • Codex: Dark Angels (4th Edition), pg. 73
  • Codex: Dark Eldar (5th Edition), pg. 20
  • Codex: Dark Eldar (4th Edition), pp. 4-5
  • Codex Imperialis (2nd Edition)
  • Codex: Eldar (4th Edition)
  • Codex: Eldar (3rd Edition)
  • Codex: Eldar (2nd Edition)
  • Codex: Sisters of Battle (2nd Edition)
  • Codex: Space Marines (5th Edition), pg. 8
  • Codex: Space Marines (3rd Edition), pg. 47
  • Codex: Space Wolves (5th Edition), pg. 9
  • Codex: Ultramarines (2nd Edition)
  • Dark Heresy: Blood of Martyrs (RPG), pg. 57
  • Dark Heresy: Core Rulebook (RPG)
  • Dark Heresy: Creatures Anathema (RPG), pp. 76-85
  • Dark Heresy: Daemon Hunter (RPG), pp. 58-59
  • Dark Heresy: Inquisitor's Handbook (RPG), pp. 68-70
  • Dark Heresy: The Lathe Worlds (RPG)
  • Horus Heresy: Collected Visions
  • Imperial Armour Volume Twelve - The Fall of Orpheus, pg. 16
  • Index Astartes I
  • Index Astartes II
  • Index Astartes III
  • Index Astartes IV
  • Renegades: Eldar and Chaos Armies for Space Marine (2nd Edition)
  • The Horus Heresy - Book One: Betrayal by Alan Bligh, pp. 38-40, 80-81, 103-104, 122
  • The Horus Heresy - Book Two: Massacre by Alan Bligh, pp. 14, 19, 65-66, 98
  • The Horus Heresy - Book Three: Extermination by Alan Bligh (Forge World Series), pp. 19, 60, 67, 75, 80-82, 94, 102, 109-110, 152, 155, 251
  • The Horus Heresy - Book Four: Conquest by Alan Bligh (Forge World Series), pp. 66-67, 72-73
  • The Horus Heresy - Book Seven: Inferno by Alan Bligh (Forge World Series), pg. 10
  • Warhammer 40,000: Compendium (2nd Edition), ""Warhammer 40,000: Squats - Space Dwarf Warriors & Mercenaries," by Bryan Ansell, Nigel Stillman & Graeme Davis, pp. 164-166
  • Warhammer 40,000: Rulebook (6th Edition), pp. 167-168
  • Warhammer 40,000: Rulebook (5th Edition), pg. 122
  • White Dwarf 308 (US), "Priests of Mars", pg. 84
  • White Dwarf 191 (US), "Ordinatus: Imperium - The Adeptus Mechanicus", pp. 49-53
  • White Dwarf 178 (US), "The Titan Legions: History, The Adeptus Mechanicus - The Birth of the Cult Mechanicus", pp. 45-52
  • White Dwarf 166 (UK), "Codex Imperialis"
  • Horus Rising (Novel) by Dan Abnett
  • False Gods (Novel) by Graham McNeill
  • Galaxy in Flames (Novel) by Ben Counter
  • Flight of the Eisenstein (Novel) by James Swallow
  • Fulgrim (Novel) by Graham McNeill
  • Descent of Angels (Novel) by Mitchel Scanlon
  • Mechanicum (Novel) by Graham McNeill
  • Legion (Novel) by Dan Abnett
  • The Outcast Dead (Novel) by Graham McNeill
  • A Thousand Sons (Novel) by Graham McNeill
  • The First Heretic (Novel) by Aaron Dembski-Bowden
  • Age of Darkness (Anthology), various Authors
  • Tales of Heresy (Anthology), various Authors
  • Fear to Tread (Novel) by James Swallow
  • Deliverance Lost (Novel) by Gav Thorpe
  • Mark of Calth (Anthology), "Umarked" (Short Story) by Dan Abnett
  • The Imperial Truth (Anthology), "The Devine Adoratrice" (Short Story) by Graham McNeill
  • Shadows of Treachery (Anthology), "Prince of Crows" (Short Story) by Aaron Dembski-Bowden

M29 Timeline M31

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