Ballantine was severely wounded and returned to Canada to convalesce in the summer of 1915. While recuperating, he was award the Distinguished Service Order by KingGeorge V and promoted to Lieutenant-colonel. Once he had recovered, Ballantine organized the 76th Battalion and commanded the unit when it was deployed to France in April 1916.[3] Ballantine remained as its commander until the unit was absorbed by the 36th Battalion. Afterwards, Ballantine was made a Companion of the Order of St Michael and St George for his efforts and briefly commanded the 109th Battalion before it too was absorbed into another unit. Ballantine returned to France with the 4th Battalion and commanded troops on the RMS Empress of Britain until he was mustered out in April of 1917.
College
In August 1917, Ballantine accepted the directorship of military science at Colgate University in New York. Shortly after his appointment, he was also named as superintendent of ground and buildings as well as taking over the head coaching duties for the school's lacrosse, rifle and soccer teams. Ballantine relinquished control of the soccer team in 1924, helmed the rifle team until its dissolution in 1928 and remained the coach of the lacrosse team until his retirement in 1933. Ballantine also briefly coached the ice hockey team for three seasons.[4]
After his tenure with Colgate ended, Ballantine returned to Georgetown where he remained until his death in 1948.
National champion
Postseason invitational champion
Conference regular season champion
Conference regular season and conference tournament champion
Division regular season champion
Division regular season and conference tournament champion
Conference tournament champion
National champion
Postseason invitational champion
Conference regular season champion
Conference regular season and conference tournament champion
Division regular season champion
Division regular season and conference tournament champion
Conference tournament champion
National champion
Postseason invitational champion
Conference regular season champion
Conference regular season and conference tournament champion
Division regular season champion
Division regular season and conference tournament champion
Conference tournament champion