 Summary executions of Soviet POWs were also carried out at Buchenwald.At least 1,000 men were selected in 1941–42 by a task force of three Dresden Gestapo officers and sent to the camp for immediate liquidation by a gunshot to the back of the neck, the infamous "Genickschuss".The camp was also a site of large-scale trials for vaccines against epidemic typhus in 1942 and 1943.