\r \r \r Ilse Koch (née Margarete Ilse Köhler; 22 September 1906 -- 1 September 1967) was the wife of Karl-Otto Koch, commandant of the Nazi concentration camps .\r \r \r \r Buchenwald concentration camp (German: Konzentrationslager (KZ) Buchenwald) was a German Nazi concentration camp established on the Ettersberg (Etter .\r \r