Guerrilla warfare
This war tactic was used in British America by the Native Americans. In various wars, they fought guerilla wars for the French or the British or against them or other enemies. During the American Revolutionary War, the Patriots and the Loyalists used guerilla warfare against enemy regular forces. Continuing the pre-war fighting of Bleeding Kansas, guerilla warfare was common in the order states during the American Civil War.  It was used also during the First Indochina War by the Vietnamese rebels against the French and during the Vietnam War by the North Vietnamese against the Americans and South Vietnamese.