Of the millions that were killed by German hands during World War II, countless thousands were prisoners of war. Often massive numbers of prisoners were killed at a time in acts of retaliation for the killing of German soldiers. Over the decades, the image of the sadistic Nazi interrogator has become commonplace. His father, Hans Hermann Scharff, was a highly decorated soldier in the East Prussian Army who was killed during The Great War. During the remainder of the war, Scharff interrogated all manner of famous, high ranking pilots.