Ottor Treu entered service with the Wehrmacht in 1935. He was in Stalingrad in 1942 and was promoted to Leutnant in 1943. His brother Max Otto Erich Treu served also and was stationed inKempten in 1943 and 1944. His brother Gerhard Wilhelm Albert Treu was killed in action near Orscha, Belarus in 1943.
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