John Banner (Schultz) and Leon Askin (Burkhalter) were also Jewish. Both got out before the war, but IIRC, Askin lost family in the holocaust.
Askin’s short clipped speech pattern as Gen. Burkhalter was based on Goering; if you see the film clip of Goering in the dock at Nuremburg, that’s how Burkhalter sounded.
Askin lived to the age of 98.
He was great in the movie “One, Two, Three” as a member of the Russian trade delegation.