Judgement of Hellenus
The Judgement of Hellenus (also - Judgment of Hellanus occurred in 801.M41 when Inquisitor Hector Rex, assumed direct control over the 297th Assault Armada of the Imperial Navy and immediately ordered the Mutant population of Hellenus purged for crimes against genetic purity. At the height of the purge, a combined strike force consisting of Space Marines from the Sons of Guilliman, Skull Bearers and Iron Lords Chapters were gathered together to confront the abominations defending the Mutant's capital. During this confrontation, the Iron Lords' contingent became tainted by the Mutants' hideous gene-taint, forcing their fellow Space Marines to purge them as well.
- 1: Imperial Armour Volume Two - Second Edition, pg. 21
- 2: Imperial Armour Volume Two (First Edition), pg. 204