Education
Dewar attended Indiana University, where he was a standout as a halfback on the school"s football team starting as a sophomore in 1942. He ran back a punt 90 yards for a touchdown in a 53–0 victory over Butler University that year. Dewar joined the United States. Army in 1943 during World World War II and played service football at Camp Grant in Rockford, Illinois.
He was selected in 1944 to play in the College All-Star Game, a now-defunct matchup between the National Football League champion and a squad composed of the country"s best college players.
After the war, Dewar returned for a final season at Indiana.