The Battle of Red Bank was a battle fought on October 22, 1777 during the American Revolutionary War in which a British and Hessian force was sent to take Fort Mercer on the left bank (or New Jersey side) of the Delaware River just south of Philadelphia, but was decisively defeated by a far inferior force of Colonial defenders. Although the British did take Fort Mercer a month later, the victory supplied a sorely-needed morale boost to the American cause, delayed British plans to consolidate gains in Philadelphia, and relieved pressure on General George Washington's army to the north of the city.