sentences:  Later in the year, Ryen played a Nazi officer in the war drama "The Cross of Lorraine" with Peter Lorre and Hans Twardowski.In 1944, he appeared with John Qualen in "An American Romance" and "The Hitler Gang" showing the rise of Adolf Hitler.With the end of the World War II, German actors playing Nazis were less in demand and Ryen's appearances in films dried up by the end of the decade.