At which 1781 battle did the Patriots record a sound victory against the British by outsmarting them, ultimately forcing Lord Cornwallis to leave the colony for good?

At the battle of Yorktown in the year 1781, the Patriots recorded a sound victory against the British by outsmarting them, ultimately forcing Lord Cornwallis to leave the colony for good. General Charles Cornwallis surrendered along with 8000 British soldiers and seamen to the French and American force.