At the Battle of Yorktown, he commanded the first brigade in Lafayette's Light Division. His brigade was part of the Corps of Light Infantry, consisting of the light infantry companies of the line regiments of Massachusetts (ten companies), Connecticut (five companies), New Hampshire (five companies), and Rhode Island and New Jersey (one each). They held the right flank and manned the two trenches built to move American cannons closer to Cornwallis' defenses. The battalion commanded by American Lt. Colonel Alexander Hamilton and French Lieutenant Colonel Jean-Joseph Sourbader de Gimat led the night bayonet attack that stormed Redoubt No. 10 on October 14, 1781.