Werner Klemperer the United States Army to serve in World War II. While stationed in Hawaii, he joined the Army's Special Services unit, spending the next years touring the Pacific entertaining the troops. At the end of the war,
The actors who played the four major German roles—Werner Klemperer (Klink), John Banner (Schultz), Leon Askin (Burkhalter), and Howard Caine (Hochstetter)—were Jewish. Furthermore, Klemperer, Banner, Askin, and Robert Clary (LeBeau) were Jews who had fled the Nazis during World War II. John Banner had been held in a (pre-war) concentration camp and his family was killed during the war. Banner served in the US Armed Forces during World War II in the US Army Air Corps.