Not much is known about Darth Kreig until he had entered Imperial service at the age of 16 when he signed up for the imperial Army. He was in the army for 5 years and during his time in the military he had cross trained with the Imperial Navy and learned to pilot a TIE fighter. After his service ended he went around as mercenary and fought dozens of small wars. He quickly found Decimate who led the Revanchist Empire and joined.