American Revolution: French and American forces backed by a French fleet begin the siege of Yorktown.

The siege of Yorktown, also known as the Battle of Yorktown and the surrender at Yorktown, was the final battle of the American Revolutionary War. It was won decisively by the Continental Army, led by George Washington, with support from the Marquis de Lafayette and French Army troops, led by the Comte de Rochambeau, and a French Navy force commanded by the Comte de Grasse over the British Army commanded by British Lieutenant General Charles Cornwallis. The siege began on September 28, 1781, and ended on October 19, 1781, at exactly 10:30 am in Yorktown, Virginia.

September 28 is the 271st day of the year in the Gregorian calendar; 94 days remain until the end of the year.