What had occurred in the mean time was the evacuation of Fort Lee, a hasty retreat through New Jersey, the dwindling away of the army, the advance of the British towards Philadelphia, the removal of Congress to Baltimore, and an increase of despondency throughout the country.[223] Washington with the remnants of his army had taken post on the right bank of the Delaware, and, still strong in hope, was calling for militia to come to his assistance. At the same time he watched the opportunity to inflict upon the enemy some happy counter-stroke that might temporarily raise the spirits of his soldiers and the people. The opportunity came. The British delayed crossing the Delaware, and divided their force among different posts throughout New Jersey. At Trenton they stationed Colonel Rall with a body twelve hundred strong, composed chiefly of Hessians. This was the Rall who marched up with De Heister on Long Island, and figured in the capture of prisoners, who afterwards turned our right on Chatterton's Hill, at White Plains, and whose attack on Rawlings at Fort Washington was the brilliant feature of that day. He was every inch a soldier, except in possessing that reserve of caution which every commander is bound to exercise in the presence of an enemy, however remote the probability of an attack. Rall despised Washington's troops, and would throw up no intrenchments around Trenton. [Footnote 223: After the battle of White Plains, Howe, we have seen, moved against Fort Washington. On the other hand, Washington, supposing that Howe would aim next for Philadelphia, prepared to cross part of his force into Jersey and endeavor to protect that city. He proposed to continue the policy of "wasting" the campaign. Heath was left to look after the Highlands; Lee with another force remained at Northcastle, and Connecticut troops were posted at Saw Pits and the borders of that State. Washington took with him Putnam, Greene, Stirling, and Mercer, with less than four thousand men, and fell back before the British through Brunswick, Princeton, and Trenton. He wrote several times to Lee to join him, but Lee was full of excuses and utterly failed Washington at this crisis. While marching in no haste by a westerly route through Jersey, Lee was surprised at his quarters at Baskingridge on the morning of December 13th, and made prisoner by Lieutenant-Colonel Harcourt and a party of dragoons. (The account of the capture by Captain Bradford, Lee's aid, not heretofore published, is given in _Document_ 46. In Wilkinson's _Memoirs_ there is another account.) Sullivan then took command of Lee's troops and joined Washington, who at Trenton had crossed to the Pennsylvania side of the Delaware, removing all boats to delay the enemy, and had halted in camp a few miles above.]