http://www.listal.com/list/war-heroes-big-screen-war
Gene Autry - The singing Cowboy. Flew the Hump as a C46 pilot. Also flew C47's in N. Africa.
Tyrone Power. USMC flew R5D and PB4Y's with VMR 352 in the Pacific. As he was felt to be too old for combat.
Gene Roddenberry (Of Star Trek Fame) USAAF WW2, flew B-17, C-46, C-47 in 394th BS, 5th BG, 13th AF, Pacific theater; awarded DFC and Air Medal. 89 Missions.
Charles Bronson USAAF, served as a Gunnery instructor, but also did time as a combat gunner with 25 missions, 39BG 20th AF; Purple Heart.
Charlton Heston USAAF SSgt, B-25 radioman/gunner 11th AF.
Walter Matthau USAAF 8th AF B-24 Liberator radioman-gunner 453rd Bombardment Group.
Jack Palance. Didn't see combat but USAAF. His facial scars were apparently a result of bailing out of a burning B24 during flight training.
Christopher Lee (OK I'm cheating here, but I think he's an amazing Actor). Flight Lt RAF Intelligence, served in N Africa Italy, Sicily
Denholm Elliott RAF Radioman Navigator Bomber command shot down over Denmark and captured - 42.
Paul Newman. USN Radio/Gunner in a Torpedo Sqn on USS Bunker Hill.
Richard Todd..........could have played himself in 'The Longest Day'
Roald Dahl was a RAF fighter ace [5 victories]
Lawrence Olivier, Spike Milligan, Tommy Cooper, Michael Bentine, Kenneth Wolstenhome, Patrick Moore, Mel Brooks, Lenny Bruce, Kirk Douglas, James Doohan, Fred Gwynne [The Munsters], Sterling Hayden, Rock Hudson, Charlton Heston, Jack Klugman, Walter Matthau [453rd BG same as Jimmy Stewart], Lee Marvin [shot in the *** at Saipan with the USMC] Karl Malden, Tony Randall, Robert Stack, Harry Dean Stanton, Rod Steiger, Lee Van Cleef, all served in the military in World War II, some seeing combat