Which French commander led the French ground forces supporting Washington at the 1781 Siege of Yorktown?

Comte de Rochambeau led the French ground forces supporting Washington at the 1781 Siege of Yorktown.

Jean-Baptiste Donatien de Vimeur, comte de Rochambeau, commanded the French expeditionary army sent to aid the American Revolution. His troops landed at Newport, Rhode Island, in July 1780. In 1781, Rochambeau's soldiers marched south with Washington's army and joined the campaign against the British at Yorktown, Virginia.

The Franco-American siege began on September 28, 1781, and ended with British General Charles Cornwallis's surrender on October 19. French troops formed a major part of the allied force, while French naval support under the comte de Grasse helped prevent British relief by controlling the Chesapeake Bay.

Rochambeau is often confused with de Grasse, who commanded the French fleet, or Lafayette, who led American forces in Virginia. Rochambeau's specific role was command of the French army on land. The Yorktown victory was the final major land engagement of the Revolutionary War.