A map of New Jersey, Pennsylvania, Delaware, and Maryland showing the Philadelphia Campaign route(1777) of British commander General William Howe from Long Island to the Chesapeake Bay, his landing site at Elkton (Head of Elk) Maryland, Chadds Ford (Battle of Brandywine), Philadelphia, Germantown, and Washington's winter quarters at Valley Forge. In Philadelphia Howe was replaced by Sir Henry Clinton, who abandoned Philadelphia in 1778 in a march to reinforce the British in New York City. The battle site of Monmouth, New Jersey, is shown on this map.