Triumph of the Spirit (1989)
Triumph of the Spirit is a 1989 American film directed by Robert M. Young and starring Willem Dafoe and Edward James Olmos. The majority of the film is set in the death camp at Auschwitz during the Holocaust and details how the Jewish boxer Salamo Arouch was forced to fight other internees to the death for the SS guards' entertainment. Prior to Triumph of the Spirit, no major feature film had ever been shot on location at Auschwitz.
More at Wikipedia.