Castigation of the Sanctors

The Castigation of the Sanctors was an Imperial expedition to the Sanctors of Lightrim's Chapter homeworld to investigate rumours of diabolic practices and the use of heretic weaponry in their war against the Great Enemy.

History
"You stand accused of consorting with the daemon, with taking up the weapons of the cursed, and of self-aggrandisement. You will answer these charges, to the satisfaction of the Ordo Hereticus, and you will submit yourself to whatever censure is apportioned." "And if I refuse to submit to the petty judgement of one Inquisitor?" "If you do not comply, then your Chapter will pay for your folly, and be cast out, beyond the light of the Emperor, for all time." "And what if I do not recognise the right of the Inquisition to excommunicate my Chapter thus?" "Then you will not leave Lightrim alive. The choice is yours."

- Vox transmission recording between Inquisitor Morum Fel and the Chapter Master of the Sanctors of Lightrim, ca. 500.M41

The Sanctors' actions alert the Inquisition to their use of the Ruinous Powers. The Inquisition ordered a thorough investigation of the Chapter. Inquisitor Morum Fel was sent to the Sanctor's Chapter homeworld of Lightrim to investigate Chapter's practices and search for any sign of potential corruption. What Morum Fel found was that these Astartes blatantly used the fell powers of the Warp as well as dark sorcery, which was strictly forbidden by Imperial edict. The newly renamed 'Sons of Damantion', openly worshipped the Ruinous Powers. The Inquisitor did not return from Lightrim, having vanished under mysterious circumstances. A fellow Inquisitor received a secret transmission from Inquisitor Fel just before his disappearance and was shocked by the evidence his colleague had uncovered.

This Inquisitor and a strike force comprised of 100 Inquisitorial Storm Troopers were quickly despatched to Lightrim in order to discover Fel's fate, and to determine for himself whether the Sanctors of Lightrim were either loyal or heretics. He soon had his answer, when he was confronted by Morum Fel, now twisted by Chaos, who summoned daemonic servants to the material realm in order to feast upon the interlopers. The Inquisitor ordered his men to make a fighting withdrawal to his ship before it was too late, however, only 10 Storm Troopers and the Inquisitor managed to survive. Making a hasty retreat, they Inquisition would return in order to bring their unfettered wrath down upon the traitorous Chapter