In what year did the revolutionary war end the surrender of British general Cornwallis at Yorktown?

When the British came out to surrender and lay down their arms, Lord Cornwallis sent Word that he was "sick" and remained in Yorktown. His deputy commander attempted to proffer his sWord to the French general, who pointed him toward General Washington. Washington declined to accept the sWord of this subordinate, and pointed him to General Benjamin Lincoln, one of Washington's division commanders. Lincoln had been captured in May 1780, when he had to surrender Charleston SC, and had recently been exchanged. So this formal gesture of surrender was received by Lincoln.

This formal ceremony of surrender was on October 19, 1781, two days after the British showed a flag of truce.