In life, war. In death, peace. In life, shame. In death, atonement

The Death Korps of Krieg is the name given to all of the Imperial Guard regiments that originate from the devastated, post-nuclear Death World of Krieg in the Segmentum Tempestus. Krieg was the site of a rebellion against the Imperium of Man over 1,500 standard years ago in the 40th Millennium and was bombarded with nuclear weapons followed by five hundred years of grinding warfare to purge the heretical rebels. After all those years of nuclear destruction and bitter trench warfare, Krieg was reduced to a scorched, radioactive husk of a world composed of dust and mud whose surviving people were forced to retreat into underground hive cities to survive the toxic planetary environment. The Death Korps of Krieg is a siege specialist regiment of the Imperial Guard and the regiments raised on Krieg seek to repent for their former treachery against the Imperium by displaying a disturbing disregard for their own lives in combat. Death Korps troops excel at wars of attrition and defensive combat in particular.

DKOK Info[warhammer40k.wikia.com]