Johann Niemann at Grafeneck

Johann Niemann at the Grafeneck "euthanasia" killing center

Johann Niemann (left) and an unidentified man walk on the snow covered driveway to Grafeneck Castle in early 1940. Niemann worked as a stoker at Grafeneck, cremating victims' corpses in the crematoria. He later became the deputy commander of the Sobibor killing center. 


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