Fulminators
GW canon
Summary
Early Ultima Founding Chapter named for the electrical storms of Mars; its brothers bear lightning scars.
Allegiance
Loyalists
Founding
Ultima Founding (Primaris)
Colours
Blue armour, gold chest imperialis and white left pauldron
Epoch
M31–M42
History
The Fulminators are among the Ultima Founding Chapters raised at Guilliman's direct order and are said to have been founded as early as M31 in the last battles of the Scouring. The first aspirants came from the best recruits of the Terran Guard. After the 13th Black Crusade they reinforce the Indomitus Crusade; they fought at Charadon, in the Nachmund Rift War and in the War for Chevreuse.
Notes
Named for the electrical storms on Mars, into which neophytes were sent as a rite of passage. The brothers bear zigzag lightning scars.
Additional Information
Founding, detail
M31, in the last battles of the Scouring (per the Lexicanum); raised on Mars
Sources
Lexicanum, article “Fulminators” (revision 792878, retrieved 25 Oct 2026): https://wh40k.lexicanum.com/wiki/Fulminators. Works cited there: New Warhammer 40,000: The Ultima Founding (Warhammer Community); War Zone Charadon - Act II: The Book of Fire; Codex: Space Marines (8th Edition); Lords of the Storm (Novella).