“Do not attempt to understand the things that emerge from that foul realm, my Sisters. It is only necessary that you hate them.”
–Canoness Challant, before the Purging of Ferrom
From The Askelline Incursion:
At the Ferrom system, an entire army group was raised from the massive worker population, issued las carbines drawn from emergency stocks many centuries old, and ferried in the cargo holds of bulk haulers to the Space Hulk that had appeared out-system. Entire companies of these worker-soldiers were crammed into shuttles rated to hold a tenth of the number of passengers and fired across the void to board the vast hulk. For ten days, shuttle after shuttle deployed company after company until at length a hundred thousand and more soldiers were scouring the dark tunnels...
...With a burst of light of no hue known to sane minds, the Space Hulk was dragged back into the Empyrean. At the moment of translation, every soul on board cried out in such anguish that every Psyker (DHII) within several light years felt their pain, many suffering seizures, some even perishing. Of that hundred thousand strong army, not a trace was ever discovered.