The German SS officer Joseph Kramer was a camp commander in various concentration camps, such as Natzweiler, Auschwitz-Birkenau, Bergen-Belsen. During the liberation of Bergen-Belsen in 1945 there were more than 50,000 people in the camp, which was the last camp that Kramer commanded. The allies found more than 13,000 dead prisoners there. Joseph Kramer was sentenced to death in Nuremberg and executed in 1946. The Nuremberg Trials were held in this German city where 22 Nazi leaders were tried. The trial began on 20 November 1945 and continued until 1 October 1946, when the sentences were announced.