This archive tracks four layers. A record present in 1 of them (M41) is silent in the rest, and says so.
The Horus HeresyM30–M31
[RECORD LOST]
No record for this location in The Horus Heresy.
Position in this era: [RECORD LOST].
Age of the ImperiumM32–M40
[RECORD LOST]
No record for this location in Age of the Imperium.
Position in this era: [RECORD LOST].
The 41st Millenniumpre-Rift
chaos
Black Legion Grand Cruiser, Urkrathos's flagship
A Grand Cruiser of the Black Legion that served in the Great Crusade as the Ius Bellum and was renamed when Horus showed his intentions. In 999.M41, during the 13th Black Crusade, she is the flagship of Urkrathos, Chosen of Abaddon, leading a small fleet to the returned Forge World of Chaeroneia after a message from its Dark Mechanicus, interpreted for Urkrathos by the sorcerer Feogrym.
Position: Borosis System (Chaeroneia) Black Legion Grand Cruiser, flagship of Urkrathos, Chosen of Abaddon, answering Chaeroneia's call during the 13th Black Crusade Cited in Dark Adeptus
Era Indomituspost-Rift
[RECORD LOST]
No record for this location in Era Indomitus.
Position in this era: [RECORD LOST].
Position
A mobile record: it carries a position timeline rather than a fixed point. The archive places it in 1 of the four eras (M41); each era section above carries that era's entry.
Books set here
1 title in the reading tracker touches this record. Titles link out to the tracker.
Every fact in this record, and where it came from. Editorial derivations say so.
identityhigh
wh40k.lexicanum.com/wiki/Hellforger (read directly in a browser on 2026-10-03; Ius_Bellum redirects to it): 'a Chaos cruiser in the service of the Black Legion dating back to the Great Crusade'; 'a Grand Cruiser originally named Ius Bellum during the Great Crusade, but once Horus had made his intentions known it was renamed'; 'Captained by the Black Legion lieutenant Urkrathos, it was the flagship of a small fleet sent to investigate the possibility of new allies on the forge world of Chaeroneia during the 13th Black Crusade' (Dark Adeptus, Chapter Seven). https://wh40k.lexicanum.com/wiki/Feogrym: Feogrym served 'on the ship Hellforger' (ch. 7). NAME-COLLISION CHECK: Lexicanum full-text search for 'Hellforger' returns this vessel and pages about this novel; no index record uses the id or label.
positionshigh
m41, the Borosis System (Chaeroneia): Lexicanum Hellforger and Urkrathos (ch. 7), Alaric ('a chaos fleet led by the Hellforger has emerged from the warp to answer the call of the planet'), Antigonus ('the approaching Chaos Grand Cruiser Hellforger', its descent from orbit and its lance batteries).
classhigh
Grand Cruiser, per Lexicanum Hellforger and Urkrathos; no archetype beyond the generic ship schematic is set.
erashigh
m41 only, the novel's era (999.M41, the 13th Black Crusade). Her Great Crusade service as the Ius Bellum is named but no source places her anywhere then, so no hh position is asserted. Allegiance 'chaos' (Black Legion).