U.S. Army Special Forces: The most famous Green Berets ...
He served as a Green Beret combat medic with the rank of Staff Sergeant of the United States Army during the Vietnam War. Barry Sadler later wrote the hit song, "The Ballad of the Green Berets," which spent five weeks atop the Hot 100 chart in 1966. That was enough to put him on the list of the most famous Green Berets in history.