The war also increased a sense of American unity in other ways. It caused men to travel across the continent who might otherwise have never left their own colony, fighting alongside men from decidedly different backgrounds who were nonetheless still "American". Throughout the course of the war, British officers trained American ones for battle, most notably George Washington, which benefitted the American cause during the Revolution. Also, colonial legislatures and officials had to cooperate intensively, for the first time, in pursuit of the continent-wide military effort. The relations between the British military establishment and the colonists were not always positive, setting the stage for later distrust and dislike of British troops.