 Upon his release , Morris returned to Peekskill where he discovered that he had been promoted to the rank of captain while in the custody of the British . Morris commanded a company back to White Plains until he received orders to head south to Virginia . Upon arrival , Morris 's company , under the overall command of General George Washington , aided in Siege of Yorktown , the last major battle of the American Revolution . Specifically , Morris 's company of light infantry provided support to the forlorn hope commanded by Colonel Alexander Hamilton . 
