A study of German Ordnungspolizei (Order Police) Reserve Unit 101, used to massacre and round up Jews for deportation to the Nazi death camps in German occupied Poland in 1942. The conclusion of the book, which was much influenced by the experiments of Stanley Milgram, was that the men of Unit 101 were not demons or Nazi fanatics but ordinary middle-aged men of working-class background from Hamburg, who had been drafted but found unfit for military duty. In some cases, these men were ordered to round up Jews and if there was not enough room for them on the trains, to shoot them. In other, more chilling cases, they were ordered to merely kill a specified number of Jews in a given town or area. The commander of the unit gave his men the choice of opting out of this duty if they found it too unpleasant; the majority chose not to exercise that option, resulting in fewer than 15 men out of a battalion of 500 opting out of their grisly duties. Browning argued that the men of Unit 101 killed out of a basic obedience to authority and peer pressure, not blood-lust or primal hatred. While the specifics of this book deal with killings performed by otherwise average men, the general implication of the book is that when placed in a coherent group setting, most people will adhere to the commands given, even if they find the actions morally reprehensible. Additionally the book demonstrates that ordinary people will more than likely follow orders, even those they might personally question, when they perceive these orders as originating from an authority, a fascinating hypothesis also studied in the Milgram Experiment.