Which French commander led allied French forces beside Washington at the Battle of Yorktown?

Comte de Rochambeau led the allied French army beside Washington at the Battle of Yorktown.

Jean-Baptiste Donatien de Vimeur, comte de Rochambeau, commanded the French expeditionary force sent to support the American Revolution. In 1781, his troops joined George Washington’s Continental Army for the campaign against the British at Yorktown, Virginia.

The allied victory depended on cooperation among land and naval forces. French Admiral de Grasse blocked British reinforcement and evacuation by sea, while Washington and Rochambeau directed the siege on land. British General Charles Cornwallis surrendered on October 19, 1781.

Rochambeau is sometimes confused with the Marquis de Lafayette, another prominent French participant, or with Admiral de Grasse, whose fleet was decisive at sea. Yorktown did not immediately end every military action, but it became the last major battle of the American Revolutionary War.