Aware of the advantage to result from a victory over the British army while separated from the fleet, General Washington had been uniformly determined to risk much to gain one. He had, therefore, after the battle of Germantown, continued to watch assiduously for an opportunity to attack his enemy once more to advantage. The circumspect caution of General Howe afforded none. After the repulse at Red Bank, his measures were slow but certain; and were calculated to insure the possession of the forts without exposing his troops to the hazard of an assault. In this state of things, intelligence was received of the successful termination of the northern campaign, in consequence of which great part of the troops who had been employed against Burgoyne, might be drawn to the aid of the army in Pennsylvania. But it was feared that, before these reinforcements could arrive, Sir William Howe would gain possession of the forts, and remove the obstructions to the navigation of the Delaware. This apprehension furnished a strong motive for vigorous attempts to relieve fort Mifflin. But the relative force of the armies, the difficulty of acting offensively against Philadelphia, and, above all, the reflection that a defeat might disable him from meeting his enemy in the field even after the arrival of the troops expected from the north, determined General Washington not to hazard a second attack under existing circumstances. To expedite the reinforcements for which he waited, Colonel Hamilton was despatched to General Gates with directions to represent to him the condition of the armies in Pennsylvania; and to urge him, if he contemplated no other service of more importance, immediately to send the regiments of Massachusetts and New Hampshire to aid the army of the middle department. These orders were not peremptory, because it was possible that some other object (as the capture of New York) still more interesting than the expulsion of General Howe from Philadelphia, might be contemplated by Gates; and Washington meant not to interfere with the accomplishment of such object. On reaching General Putnam, Colonel Hamilton found that a considerable part of the northern army had joined that officer, but that Gates had detained four brigades at Albany for an expedition intended to be made in the winter against Ticonderoga.