Virginia, 1781

Main article: Yorktown campaign

Surrender of Cornwallis at Yorktown by (John Trumbull, 1797)

Cornwallis proceeded from Wilmington north into Virginia, on the grounds that Virginia needed to be subdued in order to hold the southern colonies. Earlier, in January 1781, a small British raiding force under Benedict Arnold had landed there, and began moving through the countryside, destroying supply depots, mills, and other economic targets. In February, General Washington dispatched General Lafayette to counter Arnold, later also sending General Anthony Wayne. Arnold was reinforced with additional troops from New York in March, and his army was joined with that of Cornwallis in May. Lafayette skirmished with Cornwallis, avoiding a large-scale battle while gathering reinforcements.
Cornwallis' Virginia campaign was strongly opposed by his superior, General Clinton, who did not believe such a large and disease-ridden area, with a hostile population, could be pacified with the limited forces available. Clinton instead favored conducting operations further north in the Chesapeake region (Maryland, Delaware, and southern Pennsylvania) where he believed there was a strong Loyalist presence. Upon his arrival at Williamsburg in June, Cornwallis received orders from Clinton to establish a fortified naval base and a request to send several thousand troops to New York to counter a possible Franco-American attack. Following these orders, he fortified Yorktown, and, shadowed by Lafayette, awaited the arrival of the Royal Navy.^[123]
The northern, southern, and naval theaters of the war converged in 1781 at Yorktown, Virginia. The French fleet became available for operations, which could either move against Yorktown or New York. Washington still favored attacking New York, but the French decided to send the fleet to their preferred target at Yorktown. Learning of the planned movement of the French fleet in August, Washington began moving his army south to cooperate. The British fleet, not realizing that the French had sent their entire fleet to America, dispatched an inadequate force under Admiral Graves, though the underlying reason for this was a lack of naval resources. Since the entry of France and Spain into the war, the British lacked the necessary ships to match their opponents' every move.^[124]

The French (left) and British (right) lines at the Battle of the Chesapeake

In early September, French naval forces defeated the British fleet at the Battle of the Chesapeake, cutting off Cornwallis' escape. Cornwallis, still expecting to receive support, failed to break out while he had the chance. When Washington's army arrived outside Yorktown, Cornwallis prematurely abandoned his outer position, hastening his subsequent defeat. The combined Franco-American force of 18,900 men began besieging Cornwallis in early October. For several days, the French and Americans bombarded the British defenses, and then began taking the outer redoubts. The British attempted to cobble together a relief expedition, but encountered numerous delays. Cornwallis decided his position was becoming untenable and he surrendered his entire army of over 7,000 men on October 19, 1781, the same day that the British fleet at New York sailed for his relief.^[125]