The Battle of Brandywine was the largest land battle of the American Revolution and the major conflict of the Philadelphia campaign that ended with Washington's army spending a hard winter at Valley Forge. Brandywine was also the first battle for a young French volunteer, the Marquis de Lafayette. Lafayette suffered a leg wound during the conflict. British Captain Patrick Ferguson's new invention, a breech-loading rifle, was also used for the first time at Brandywine. Ferguson had a chance to alter history that day as he had Washington in the sights of his weapon but declined to fire upon the brave Washington.