Ilsa Koch, wife of the German commander of the Buchenwald concentration camp from 1939 to 1942, Colonel Karl Koch, was notorious for her perversion and cruelty. Known as the Witch (or Bitch) of Buchenwald, she acquired the reputation of a sadist and nymphomaniac beating the prisoners with her whip and requiring that they participate in bizarre orgies. Her atrocities were so gruesome, even the Nazis were appalled.
Buchenwald was a place where all undesireable mental defectives were kept. Tales cruel experimentation abound.