A captured letter, the Wethersfield Intercept, revealed that one of the commanders planned to march 
A captured letter, the Wethersfield Intercept, revealed that one of the commanders planned to march south to this battle. The only major advance during it was achieved by Alexander Hamilton, when he captured an enemy redoubt. A British band played "The World Turned Upside Down" at the end of this standoff, and second-in-command Charles O'Hara was directed to surrender to George Washington. For 10 points, name this 1781 battle at which Lord Cornwallis' army was besieged in Virginia, the last major engagement of the American Revolution.
A captured letter, the Wethersfield Intercept, revealed that one of the commanders planned to march south to this battle.
Battle of {Yorktown}