The Battle of Germantown, a battle in the Philadelphia campaign of the American Revolutionary War, was fought on October 4, 1777, at Germantown, Pennsylvania between the British Army led by Sir William Howe and the American army under George Washington. The British victory in this battle ensured that Philadelphia, the capital of the self-proclaimed United States of America, would remain in British hands throughout the winter of 1777–1778. Now part of the city of Philadelphia, Germantown was an outlying community in 1777.