Pat Sajak
Best known as the host of "Wheel of Fortune", Pat Sajak also spent some time in the military. During the Vietnam War, he served as a radio disc jockey for the American Forces Vietnam Network. He started every broadcast with "Good morning, Vietnam!" This stint in media led him to pursue radio disc jockeying as a full-time career upon leaving the war.
J. D. Salinger
The writer of Catcher in the Rye had quite a stint in World War II. He met Ernest Hemmingway while he was stationed in Normandy and the two expressed a fondness for each other. However, the actual combat deeply affected Salinger, who once wrote to his daughter "You never really get the smell of burning flesh out of your nose entirely, no matter how long you live."