KH actors who were real soldiers
On a whim I looked at the biographies of the actors to determine which among were actually soldiers...
Telly Savalas (Big Joe) US Army. He didn't see any action and apparently received a Purple Heart from some sort of automobile accident.
Don Rickles (Crapgame) US Navy. He served on the destroyer USS Cyrene in the Pacific.
Carroll O'Connor (Gen. Colt) Merchant Marines. He served in the Atlantic and Mediterranean.
Gavin McLeod (Moriarty) US Air Force. Not in WW2, he served in the early 1950's.
Harry Dean Stanton (Willard) US Navy. Served as a cook aboard an LST in the Pacific, served at Okinawa.
Len Lesser (Bellamy) US Army. Served as a sergeant in the China-Burma-India theater.
David Hurst (Col. Dankhopf) British Army. Actually born in Berlin and moved to Ireland at the age of 12, he joined the Royal Irish Fusiliers. Because of his German background he was never sent to combat.
George Savalas (Mulligan) US Navy. Decorated gunner, served in the Pacific. (Yes, it's Telly's younger brother.)
Yves Montand (uncredited Sturmbannfuhrer) Never in the military but he lived in France during the war and served in a Nazi youth camp in 1942. Interestingly, he dated Edith Piaf from 1944 to 1946. Piaf's song "Tu Es Partout" is the song that Tom Hanks and company are listening to before the last battle in Saving Private Ryan, which is set in 1944.