Howe had captured Philadelphia. But it took so long he did not send any forces north to support Burgoyne. On September 19 Burgoyne attacked the Americans who were entrenched on Bemis Heights near Saratoga. He again fought Americans at Freeman's Farm. This time it was American riflemen under the command of Daniel Morgan. American Marksman killed a large number of British and Hessian officers. This was intended to cause confusion among the British forces. Burgoyne lost about 600 casualties. He claimed victory although he was still held in place by the Americans.