"I have travelled far and seen much. Yet nothing warms my heart so much as the sight of a gun so massive that its fury makes the very world tremble."
—Captain Darnath Lysander, 1st Company, Imperial Fists

A Techmarine unleashes the power of a Thunderfire Cannon on the battlefield


An Ultramarines Thunderfire Cannon

The Thunderfire Cannon is a colossal, quad-barrelled artillery gun designed to excel in a static defence role for the Adeptus Astartes. Each is capable of firing and reloading at a punishing rate, unleashing salvo after salvo of high explosive shells, pounding the enemy into oblivion. Only the brave or the foolish dare advance forwards in the face of such overwhelming firepower. Space Marines task forces strike hard and fast, and a unit that cannot maintain a rapid advance swiftly becomes a liability. For this reason, most of their support weapons are mounted on vehicle chassis that can keep pace with the rest of the army, as can be seen with the Vindicator and Whirlwind, but the Thunderfire Cannons are the one exception to the rule.

Mounted on rugged track units, Thunderfire Cannons can traverse almost any terrain to reach the optimum firing position. Though they can move under their own power, they are normally deployed from Thunderhawk gunships or by Drop Pod. Each Thunderfire Cannon is tended to by a single Techmarine who uses his bulky Servo-harness to reload the artillery piece whilst calculating optimal firing trajectories. The Techmarine manning a Thunderfire Cannon can set its shells to detonate in a variety of different ways, depending on the tactical situation. Surface detonations are employed against numerous enemies in comparatively clear terrain, airburst shells are used to scour a foe from cover, and the Techmarine can even program the shells to burrow deep into the ground before detonating; though the force of the blast from such shells is greatly reduced, the resulting shockwave is sufficient to leave the foe sprawling, making them easy prey for his brother Space Marines.

Adeptus Mechanicus Technical SpecificationsEdit

The full technical specifications of the Thunderfire Cannon have not yet been made public by the Adeptus Mechanicus.

See AlsoEdit


  • Codex: Space Marines (6th Edition), pp. 93, 175
  • Codex: Space Marines (5th Edition), pg. 73


Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.