=168. Washington’s Difficulties and his Retreat.=—The capture of Lee left Sullivan in command of the Northern army, and that officer moved at once to the support of Washington; but the difficulties of the situation seemed overwhelming. Howe and Cornwallis had crossed into New Jersey with a force more than twice as great as that of the Americans. Moreover, as the terms of enlistment expired, Washington found it almost impossible to keep his ranks full. Still worse, Howe, desiring to take advantage of the apparent lack of enthusiasm on the part of the American patriots, now made a final effort to induce them to throw down their arms. This was done under a promise of full pardon and protection to all who should abandon the Continental cause. More than three thousand persons, believing there was no possibility of success for the Americans, yielded to these allurements and deserted to the British. Tories everywhere now emerged from their obscurity and boldly asserted their allegiance to the king. Washington could not venture battle with his inferior force, but, with masterly skill, he slowly withdrew his army, crossing stream after stream with the British close on his heels. Even the broad waters of the Delaware did not baffle him. Pressed hard by superior forces, he threw his army across the river and destroyed all the boats on the opposite bank for nearly one hundred miles. His opponents found it impossible to follow, and decided to wait for the river to freeze over. [Illustration: RETREAT ACROSS NEW JERSEY, 1776–1777] =169. Washington turns upon his Enemy.=—Howe and Cornwallis thought the war practically at an end. Deciding to leave their army east of the Delaware, with its center at Trenton and its wings at Burlington and Princeton, they returned to New York for the festivities of the holidays, where Howe was to celebrate the knighthood conferred upon him for the capture of New York. But Washington had a Christmas surprise in store for them. Including the forces of Gates and Sullivan, he now commanded about six thousand men. The loose disposition of Howe’s troops gave him an opportunity which he immediately turned to account. He decided by a secret movement to strike a hard blow at the British center. His plan was to cross the Delaware in three divisions. The right wing, under Gates and Cadwalader, was to attack the Hessians under Donop at Burlington; Ewing was to cross and attack the center at Trenton; while Washington himself, with the left wing six miles up the river, was to cross at that point and march down on the other side to attack the British flank and rear. Gates had asked and been allowed to go to Philadelphia, where he was already intriguing with Congress in order to supplant Washington. The right wing and the center found the river, filled as it was with floating ice, too difficult to cross, but Washington’s determination and skill at once showed themselves.