This is a study of some of the rank-and-file men, the foot soldiers, who carried out the "Final Solution." The Trawniki concentration camp in Poland was used by the SS to train more than 5,000 men in the execution of mass murder. Of these 5,000, most were eastern Europeans recruited from POW camps, including a large Ukrainian contingent. “Trawnikis” were distributed throughout the concentration camp system, with particular prominence in the extermination camps of Aktion Reinhard. Trawnikis formed the firing squads during Ghetto liquidations, operated gas chambers, and carried out various other violent tasks deemed burdensome by German planners. This book will explore who these men were, and give a face to those faceless enforcers of the Holocaust.