Vidal Sassoon: Anti Nazi street fighter. Bad fucking ass.

Jimmy Stewart: WWII bomber pilot - he was 40 when the war ended and had to fight for combat duty due to his age. Flew a non-combat mission in Vietnam.

James Doohan: Shot six times at D Day, and a cigarette case stopped a bullet to his chest.

Christopher Lee: Stone cold killer in British Special forces. Supposey challenged Peter Jackson as to the sound a person makes when they get a knife to the back....because he had heard the real thing.

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Mel Brooks: Combat engineer.

http://www.usace.army.mil/About/History/Historical-Vignettes/Sports-Entertainment/109-Mel-Brooks/

There are many more, but these are my favorites.