Eddie Albert - already in the movies. Entered USN, Well decorated for service in the Pacific.
James Arness - Matt Dillon on Gun smoke was wounded in action.
Gene Autry - age 35 and already a star. USAir Corps flying over the Burma Road.
Lew Ayers - anti-war but served as a medic in the US Army in the Philippines.
Richard Boone - not yet a star. USN at age 26.
Ernest Borgnine - a star later. Entered the USN in 1935 serving 10 years, 4 in combat.
Neville Brand - not a star yet, was the second highest decorated soldier in the European theater.
Charles Bronson - not yet a star. US Air Corps - 25 combat missions. Entered at age 22.
Art Carney - not yet a star or Ed Norton, was wounded on D-Day. That is why he limped.
Robt. Cummings - already a star. Entered the US Air Corps at age 34. Flight instructor.
Tony Curtis - not yet a star. Entered USN at age 18.
Joe Dimaggio - Baseball star. Entered the US Air Corps at age 29. Special Services.
Kirk Douglas - acting but not yet a star. USN until badly hurt in an accident.
Peter Falk - tried to join the Army by cheating on the eye exam chart which he memorized because he had lost an eye as a youth. The Doctor noticed his eye didn't move while reading the chart and took a closer look. Falk then joined the Merchant Marines for the duration of WW II.
Douglas Fairbanks, Jr. - Big-time star. Entered USN at age 33. Waived easy duty for combat. Worked with British Commandoes. Well decorated.
Bob Feller - Baseball star. USN at age 24. Combat in the Pacific.
Henry Fonda - already a star. Entered USN. Waived easy duty and at age 37 saw a lot of action in the Pacific. well decorated.
Glenn Ford - already a beginning star. Entered USMC. Served on camera crew from Normandy thru Europe.
Clark Gable - big-time star. Entered US Air Corps just short of his 42nd birthday. Didn't have to go but pulled strings to do his duty to his Country. Too old to be a pilot but went on many combat missions. Well decorated. Hitler had a $5000 bounty on his head.
Hank Greenberg - Baseball star. US Air Corps at age 32. Became a captain.
Tom Harmon - sports announcer. Entered US Air Corps at age 22. Flew combat missions over Burma Road in Asia. Shot down and MIA for 30 days. WIA. Well decorated.
Sterling Hayden - beginning actor. Entered USMC at age 25. Worked with the Yugoslav partisans against the Germans and Italians.
Van Heflin - already a star. Entered the US Army at age 32. Artillery officer.
Charleton Heston - already a star. Entered the US Air Corps at age 19 as a gunner on the bombers.
Wm. Holden - already in movies. Entered US Army at age 26 after his brother was KIA. Special services.
Ralph Houk - Baseball star. Entered US Army at age 23. Served with tanks in Europe. Well decorated.
Ken Kavanaugh - Football star. Entered US Air Corps at age 26. Became a well-decorated bomber pilot.
Gene Kelly - already a star. Entered USN at age 30. did documentaries for the Navy.
Ralph Kiner - Baseball star. Entered USN at age 21. Became a bomber pilot.
Burt Lancaster - Not yet a star. Entered US Army at age 32. Special Services.
Tom Landry Not yet famous as a football coach. Entered US Air Corps after his brother was KIA. Well decorated. Joe Louis - Heavy-Weight Boxing Champ. Entered US Army at age 28. Special Services.
Karl Malden - not yet a star. Entered US Air Corps at age 30. Special Services.
Lee Marvin - not yet a star. Entered the USMC at age 18. WIA.
Walter Matthau - not yet a star. Entered the US Air Corps at age 22. Flew combat missions in Europe.
Victor Mature - already a star. Entered the US Coast Guard at age 27. Served both in the Atlantic and Pacific.
Ed McMahon - not yet a star. Entered the USMC at age 20. Flight Officer instructor.
Robt. Montgomery - already a star. Entered USN at age 20. Served on PT boats and Destroyers. Well decorated.
Wayne Morris - already a star. Entered USN at age 25. Flew 57 combat missions as a fighter pilot in the pacific. Highly decorated.
Audy Murphy, not a star yet, was the highest decorated soldier during WW II.
Stan Musial - baseball star. Entered USN at age 24.
Paul Newman - not yet a star. USN at age 17.
Hugh O'Brian - not yet a star. USMC at age 17. Drill Instructor.
Jack Palance - not yet a star. Entered US Air Corps at age 23. Badly injured and medically discharged.
Sidney Poitier - not yet a star. Entered (under age) USN.
Tyrone Power - already a star. Entered USMC at age 29. Became a fighter pilot.
Robt. Preston - already a star. Entered US Air Corps at age 25. Became a Combat Intelligence officer.
Ronald Reagan - already a star. Was already in the US Army Reserves but had bad eyesight. Could have gotten out but asked to stay. Did Army Training films.
Pee Wee Reese - baseball star. Entered USN at age 24. Special Services.
Jackie Robinson - baseball star. Entered US Army at age 23.
Mickey Rooney - already a star. Entered US Army at age 23. Special Services.
Dan Rowan - not yet a star. US Air Corps at age 20. Pilot in the Pacific.
Robt. Ryan - already a star. Entered USMC at age 34. Drill Instructor.
Sabu - already a star. Entered US Air Corps at age 20. Flew 42 combat missions.
George C. Scott - not yet a star. Entered USMC at the end of the war at age 19.
Enos Slaughter - baseball star. Entered US Air Corps at age 27.
Robt. Stack - already a star. Entered USN at age 23 serving as a gunnery officer.
Rod Steiger - not yet a star. Entered USN (under age) and served in the Pacific.
Jimmy Stewart - already a star. Entered the US Air Corps at age 34. Flew 20 combat missions in Europe. Highly decorated. Left as a Lt. Col. and remained in the USAF Reserves retiring as a Lt.General.
Joe Stydahar - football star. Entered the USN at age 30.
Robt Taylor - already a star. Entered USN at age 32. Flight Instructor.
Ted Williams - baseball star. Entered USMC at age 25, serving as a flight instructor. He also remained in the USMC reserves and got recalled to serve in the Korea War, two interruptions in his career.
Don Adams, ‘Agent 86’ of ‘Get Smart’ fame, USMC in World War Two, fought at Guadalcanal. Evac’ed with Blackwater Fever, possibly also wounded.
James Doohan, ‘Scotty’ from ‘Star Trek’. Canadian artillery officer, landed on D-Day. Wounded, multiple hits from a German machine gun. Recovered, and became a pilot-observer. Lost part of a finger in combat, which he hid- mostly successfully- from the camera in his later acting career.
Not to put too fine a point on it, but wasn’t Eddie Albert a landing craft “driver” in one or more of the most horrendous Pacific island invasions?
Aside from the “Hollywood” crowd, I believe Captain Kangaroo and Mr. Rogers, of children’s television fame, were decorated combat veterans.
Don’t forget Pat Buttram, Roy Roger’s sidekick who drove the cantankerous jeep “Lulabelle” in Roy’s TV series. There is a great interview of him in the 20th Century WWII War in Europe documentary narrated by Walter Cronkite. He was a gunner on a Sherman tank and he relates a harrowing tale of how he and his crew knocked out a German Mark V Panther!!! He acts real noncholant and bemused about the whole thing.