Second Founding (31st Millennium)
Midnight Blue & Black
The Nemesis Chapter is a Loyalist Codex Astartes-compliant Space Marine Chapter. They are a Second Founding Successor Chapter of the Ultramarines Legion. There is little information on this little-known Chapter in current Imperial records, except that they are descended from those Ultramarines companies who fought alongside the then-Loyalist Night Lords Legion during a brutal purgation campaign during the Great Crusade.
The origins of the Nemesis Chapter can be traced back to the Great Crusade over ten millennia earlier, when they were still a part of the Ultramarines Legion, then known as the XIIIth Legion, before their reunification with their Primarch Roboute Guilliman. Following their unification with their Primarch, Guilliman quickly set about restructuring his Legion's operational doctrine and hierarchy to suit his personal tastes and style of leadership. While the newly espoused doctrine of structured adaptability became deeply ingrained within many of the Legion's chapters, there were some notable deviations from this pattern. Some few individual chapters, through long held preference or some quirk of supply, maintained notable strengths of non-standard equipment or personnel. One of the more noteworthy examples of this, was the 22nd Chapter, the so-called Nemesis chapter -- long a hold-out of its Terran born contingents -- who maintained large numbers of Space Marines equipped as Destroyer units, and was one of the few Ultramarines formations to routinely be deployed especially to Exterminatus operations by the Legion.
Before their unification with their Primarch, the warrior brotherhood of the XIIIth had, at that time, only in the decades after their initial raising on Terra, begun to display its achievements visually. But rather than take on a particular livery and iconography as a whole, individual companies who had come to prominence in a particularly important Compliance operation or campaign took on additions to their core Legion livery --- which maintained the post-Unification storm grey and gunmetal they had worn since Sedna -- to commemorate their greatest achievements. Those companies who had fought alongside the VIIIth Legion in the purgation of the Abhuman corsairs of the Cancerai Nebula afterwards bore black gauntlets, midnight blue helms and the ancient weighing scales and death's head icon of judgment in heraldic opposition of their Legion numeral, and took the name of "Nemesis" as their own. Such honours were claimed as the Legion's strength made visible.
Following the end of the Horus Heresy, Primarch Roboute Guilliman was responsible for the restructuring of the Imperium's military forces. The vast Space Marine Legions would be broken down into numerous, smaller existing formations, known as a Chapter. When the Second Founding of the Space Marines was decreed seven years after the death of Horus and the end of his Heresy, most of the old Loyalist Legions divided into fewer than 5 Successor Chapters, but the Ultramarines were divided many times. The existing 22nd Chapter formed the core group of Astartes for the newly formed Nemesis Chapter.
- The Orphean War (992.M41) - Following the immense bloodshed and the loss of nearly half of the Orpheus Sector in Segmentum Tempestus to the Necrons, the Nemesis Chapter sent out troops to fight the ever-growing threat of the awakening Necron Dynasty identified as the Maynarkh Dynasty. Although they arrived too late to participate in the desperate Battle of Amarah, the detachment is requisitioned, like their brothers from the Red Seraphs Chapter, to enforce a security cordon around those worlds yet free of the Necrons' taint whilst the Imperium heavily fortifies the neighbouring Eurydice Sector.
The Nemesis Chapter's colours are predominately midnight blue with black coloured gauntlets. Presumably, as a Codex-Chapter, their squad specialty symbols are worn either on the shoulder guard or knee guard as proscribed in the Codex Astartes.
The Nemesis Chapter's badge is the ancient weighing scales and death's head icon of judgment.
- Chapter Approved 2001 - Second Book of the Astronomican
- Codex: Space Marines (3rd Edition)
- The Horus Heresy - Book Five: Tempest by Alan Bligh, pp. 70, 73, 80-81, 95
- Imperial Armour Volume Twelve : The Fall of Orpheus, pg. 40