Choose the people who actively took part in a war as commanders, officers, couriers, drivers, pilots, spies, nurses, or any other profession directly and personally supporting war efforts of their respective army.
In my opinion Cold War shouldn't count as a war. Elvis and Johnny Cash were in the military during 1950s and were in West Germany. There was no active conflict during that time. Jimi Hendrix, as far as I know, never even left the United States during his service.