When he returned to Germany after his defeat by Joe Louis, Schmeling was now shunned by the Nazis. He won both the German and European heavyweight championships on the same night, with a first-round knockout of Adolf Heuser.
During the Nazi purge of Jews from Berlin, he personally saved the lives of two Jewish children by hiding them in his apartment. It was not the first time that Schmeling defied the Nazi regime's hatred for Jews. As the story goes, Hitler let it be known through the Reich Ministry of Sports that he was very displeased at Schmeling's relationship with Joe Jacobs, his Jewish fight promoter, and wanted it terminated, but Schmeling refused to bow even to Hitler. During the war, Schmeling was forcibly drafted, where he served with the Luftwaffe and was trained as an elite paratrooper. He participated in the Battle of Crete in May 1941, where he was wounded in his right knee by mortar fire shrapnel during the first day of the battle. After recovering, he was dismissed from active service after being deemed medically unfit for duty because of his injury.
Nevertheless, in July 1944 a rumor that he had been killed in action made world news. He later visited American P.O.W. camps in Germany and occasionally tried to help conditions for the prisoners.
代理戦争となったルイス戦の敗戦について、シュメリングは約40年後の1975年に、"Looking back, I'm almost happy I lost that fight. Just imagine if I would have come back to Germany with a victory. I had nothing to do with the Nazis, but they would have given me a medal. After the war I might have been considered a war criminal."と述べたそうだ。 なるほど、歴史の評価というのはその時点ではわからないものだ。