Meanwhile, Burgoyne, out of reach from help from Howe, was trapped and forced to surrender his entire army on October 17, ten days after the Battle of Bemis Heights. The victory made a hero of General Gates, who received the adulation of Congress. While this was taking place Washington presided from a distance over the loss of control of the Delaware River to the British, and marched his army to its winter quarters at Valley Forge in December. Washington chose Valley Forge, over recommendations that he camp either closer or further from Philadelphia, because it was close enough to monitor British army movements, and protected rich farmlands to the west from the enemy's foraging expeditions.