British Fleet Defeated at the Battle of the Chesapeake
On September 5, 1781, off the Virginia Capes, the French fleet under Admiral de Grasse fought the British under Admiral Thomas Graves in the Battle of the Chesapeake. The engagement ended without a classic, decisive knockout, but the British failed to break the French control of the bay and withdrew. That naval stalemate was strategically decisive: it cut off relief to General Cornwallis at Yorktown and trapped his army on the peninsula. Within weeks, the Franco-American siege forced Cornwallis’s surrender, which in turn pushed Britain toward negotiating an end to the American Revolutionary War.