Which French general commanded French ground forces alongside Washington at Yorktown?

The Comte de Rochambeau commanded French ground forces alongside Washington at Yorktown.

Jean-Baptiste Donatien de Vimeur, Comte de Rochambeau, led the French Expeditionary Force sent to support the American Revolution. His troops joined George Washington’s Continental Army in the 1781 Yorktown campaign, creating a combined force that surrounded the British army of Charles Cornwallis.

Rochambeau’s role is sometimes confused with that of the Comte de Grasse, the French admiral whose fleet controlled the Chesapeake Bay and prevented British relief by sea. The Marquis de Lafayette also served prominently with American forces in Virginia, but he was not the commander of the French expeditionary army.

The Franco-American victory at Yorktown forced Cornwallis to surrender on October 19, 1781. French military and financial support had been crucial to the American war effort, and the alliance was formally connected to the 1778 Treaty of Alliance.