Black Crusade (2011), p337 — Mire

Beyond Melancholia is to be found the world of Mire - a fetid, clammy planet of swamps and endless plains of sucking mud. The inhabitants grub about the stinking depths of the mud flats for what little sustenance they can find, ever encrusted with layer upon layer of hard-packed filth. So scarce are sources of nutrition on Mire that when even the smallest grub or root is uncovered, entire tribes go to war with one another. Incoherent and barbarous, the savages brain one another with precious rocks or pull one another down into the cold depths where they share a hideous, mutual demise.

On several occasions, warlords have taken tribes of Mirens away, forcing them to serve as slave-warriors in their hordes. Mirens make brutally effective foot soldiers and are known for their propensity to rip open the bellies of those they have slain, plunging their arms inside the corpses in search of the choicest meats denied them on the world of their birth.