He was a lawyer by profession and participated in anti Nazi resistance movement. He knew that Himmlers was in favor of discussions with allies for a negotiated settlement to stop war. But Himmlers suggested the name of Johannes papitz to him. Long behn subsequently visited Switzerland and met Allen Dulles of USA and discussed the matter. Americans only wanted unconditional surrender of Germany. He returned to Germany and soon he was arrested by Gestapo. He was tried by people's court and sentenced to death by Freisler. He was executed at Plotzee prison.