Hogan’s Heroes was very diverse.
However, Klink, Schultz and Burkhalter were played by Jewish actors.
So was Robert Clary (who played "Corporal LeBeau"). He even had the tattoo on his arm to prove it (which is why he was always shown with long sleeves, I'm told).
Born in 1926 in Paris, France, Clary was the youngest of 14 children, 10 of whom died in the Holocaust. His parents, Baila and Moishe Widerman, were Polish Jewish immigrants. - Wikipedia
Regards,