Board Thread:Warhammer 40k General Discussion/@comment-2253300-20130211000751/@comment-7855563-20130411021335

I think we can count Cadia out of the general population of the Imperial Guard. They are trained from the day they are born to keep their mouths shut and their rifles up towards the subject of Chaos. As for the mind wipes, all Grey Knights are psykers, and each one is taught to immediately on the conclusion of a battle to wipe the minds of all of those whom had seen them, not seen Chaos. Only a few space marine chapters have escaped this: Space Wolves, Blood Ravens, etc. All others are subject to mind wipe or execution.