He returned to Brookhattan and remained with the team until 1947, except for three years during which he served in the U.S. Army during World War II.
While Brookhattan won the 1945 National Challenge Cup, Barr was injured and did not play in the final.
In 1941 George played in the first two indoor tournaments held in the old Madison Square Garden since the late 1920s.
During the years of the Second World War he was shipped off to the Southwest Pacific Theatre of Operations where he eventually captained the U. S. Army team during World War II in games played in Brisbane and Sydney, Australia.
After retirement, coached the Syosset Police Boys Club in the Long Island Junior League.