He served German army Wehrmacht during WW II, but was dishonorably discharged from army as he had Jewish ancestors and was not be kept in army as per Nuremberg laws made by Nazi Germany. He later associated with White Rose anti- Nazi resistance organisation. He had a pamphlet number 6 of white Rose and wit ha type writer was making copies of the pamphlet to be distributed in Hamburg. He was arrested by Gestapo. he was tried by the Nazi court and was sentenced to death.on 13 July 1943 he was executed.