A French Army under the Comte of Rochambeau joined Washington's army crossing the Hudson River on August 21, 1781. They then marched against Cornwallis. Covering 200 miles in 15 days, they arrived at the head of Chesapeake Bay , from where the French fleet, commanded by Admiral the Comte De Grasse transported them up to Williamsburg, near Yorktown, on Sept. 26.
The French Fleet, which on Sept. 5 had already driven the British Fleet off from the Bay of Chesapeake, maintained a sea blockade of Yorktown and Gloucester, where Cornwallis Army was entrenched.
A regular siege of British positions began on Oct. 6, forcing Cornwallis asks for an armistice on Oct. 17. On Oct. 19 the British capitulated, ending the fighting in America.
American and French troops bombarded Yorktown, turning the buildings to rubble.
Both armies cornered General Cornwallis and he surrendered.
Both armies cornered General Cornwallis and he surrendered.
France
the battle at Yorktown
The Battle of Yorktown, also known as the Siege of Yorktown, was a battle between the United States and France vs Great Britain. The result was a victory for the U.S. and France, and led to the Treaty of Paris.
France
The French war fleet prevented a British warship rescue of British troops in Yorktown. Washington's army blocked any land escape, so without France's aid, the American Revolution could have been a failure.
France and Spain stalled, hoping for some major naval victory or territorial conquest
Great Britain, the US and France participated in the battle for Yorktown.
I say that the battle if Yorktown were surrendered by cornwallid
France was a major force on that battlefield. They took 7,000 British soldiers captive. This decisive victory set the stage for the Treaty of Paris.