Johnny Cash (9/30) List item Submitted to "30 Celebrities That Served in The Military" Approved by Ed Johnny Cash served in the military from 1950 – 1954. While serving in the Air Force, Cash had an amazing ability to decipher Morse Code. He rose to the rank of Staff Sargeant and had the job of deciphering Soviet communication during the Cold War. MoreReport Item navigation Previous submission Next submission View full list See more Previous article Mr. T (9/30) Next article Tom Selleck (9/30)