This article includes explanations of the violent crimes committed by Ed Gein and by Ilse Koch during World War II. Ilse Koch Was A Nazi War Criminal Known As The "Witch Of Buchenwald"Ilse Koch was the wife of Karl-Otto Koch, the commandant at the Buchenwald concentration camp. Ilse Koch stands out as a war criminal who went far beyond the general cruelty of World War II. How Ilse Koch's Crimes Inspired Ed GeinEd Gein in Psycho: The Lost Tapes of Ed GeinWhile the stories of Ilse Koch's crimes weren't confirmed in her trial, the American media and the general population continued to spread the story. Ilse Koch was placed on trial again for war crimes at Buchenwald, and she was found guilty in 1947.