A black and white portrait photograph of the SS concentration camp Buchenwald guard, Hans Erich Merbach. Ca. 1945. Inscription underneath: Document no. 4008799, Evidence no. 33526. Trial evidence no. 019570 is on the backside. Hans Erich Merbach, 1910 to 1949, was a German SS Obersturmfuhrer adjutant in the Buchenwald concentration camp, head of the cynological service in the Auschwitz concentration camp. He was sentenced to death by hanging during the Buchenwald trial in 1947. World War II Historical Collectables And Memorabilia, Holocaust Relics, Photographs.