Armed conflict started in New England and eventually spread throughout the 13 colonies. However, the largest battles in terms of number of soldiers took place in the north. Also, the Continental Congress attempted its only invasion outside of the 13 colonies in an attempt to capture Canada from the British. Gradually, the war shifted to the southern colonies during the last 4 years of the war.
Northern Campaigns/Battles
Lexington, Concord, Bunker Hills and the Seige of Boston