The exact number of victims at Auschwitz is impossible to fix with certainty. Since the Nazis destroyed a number of records, immediate efforts to count the dead depended on the testimony of witnesses and the defendants on trial at Nuremberg. While under interrogation Rudolf Höss, commandant of Auschwitz concentration camp from 1940 to 1943, said that Adolf Eichmann told him that two and a half million Jews had been killed in gas chambers and about half a million had died "naturally"
"Selection" on the Judenrampe, Auschwitz, May/June 1944. To be sent to the right meant slave labor; to the left, the gas chambers. This image shows the arrival of Hungarian Jews from Carpatho-Ruthenia, many of them from the Berehov ghetto. The photo below was taken by Ernst Hofmann or Bernhard Walter of the SS.