The Battle of Brandywine, also known as the Battle of Brandywine Creek, was fought between the American army of General George Washington and the British army of General Sir William Howe on September 11, 1777. The British Army defeated the American Army and forced them to withdraw toward the American capital of Philadelphia. The engagement occurred near Chadds Ford, Pennsylvania during Howe's campaign to take Philadelphia, part of the American Revolutionary War. More troops fought at Brandywine than any other battle of the American Revolution. It was also the longest single-day battle of the war, with continuous fighting for 11 hours.