Ilse Koch (22 September 1906 – 1 September 1967), was the wife of Karl-Otto Koch. (Before getting married, Koch's maiden name was Margarete Ilse Köhler.) During World War II, Karl-Otto Koch was the "Commandant" (commander) of the Nazi concentration camps at Sachsenhausen, Buchenwald, and finally Majdanek. In 1947, Ilse Koch became one of the first important Nazis to be tried by the United States Military.