As a soldier in the French troupes de la marine, Belestre fought against British and American colonial troops for 30 years, from Nova Scotia to the Mississippi River valley. Belestre became famous during the wars between France and Great Britain, serving in the North American theater of the Seven Years' War, also known as the French and Indian War (1754–63). He was one of the last officers of New France to surrender to British troops.
As a soldier in the French naval troops, Belestre fought against British and American colonial forces for 30 years, from Nova Scotia to the Mississippi River valley. Belestre gained fame during the conflicts between France and Great Britain, serving in the North American theater of the Seven Years' War, also known as the French and Indian War (1754–63). He was one of the last officers of New France to surrender to British troops.