This is history. 

Also, the famous painitng of "Surrender of Lord Cornwallis" depicts Washington on the horse to accept the surrender of British army is the truth. That is the deliberate act by French commander, Comte de Rochambeau, to humilate the British officer: A nobel man to surrender to the common people. 

In history, Lord Cornwallis refused to attend the ceremony, Comte de Rochambeau did not attend either (he wanted Washington to do that to humiliate British).