When hostilities broke out at the start of the American Revolution, the Continental Army constructed a fort on Marble Hill as part of a series of forts to defend the area. By November 1776, the fort had been taken over by Hessian forces and renamed Fort Prince Charles in honor of Charles, Duke of Brunswick, brother-in-law to George III. Despite contrary beliefs, the King's Bridge and the Dyckman Free Bridge served as escape routes for the retreating American forces after the Battle of Fort Washington on November 16, 1776. The latter of these bridges was destroyed during the war. In January 1777, an American attack was made in the Marble Hill area against the Hessian occupiers. This particular raid was under the command of General William Heath, which, when the cannons opened up, forced the Hessians to retreat from the tavern to the fort to return fire.