Washington realized the position the moment of the retreat from the passes, and immediately took measures to guard against further disaster. Satisfied that Howe had his whole force with him, and that an attack was not to be apprehended at any other point, he ordered forward more troops to replace his losses and strengthen the lines. Mifflin brought down from Harlem Heights the two well-drilled Pennsylvania regiments under Colonels Magaw and Shee, with some others; and Glover's Massachusetts was sent on from Fellows' brigade. These all crossed to Long Island early on the morning of the 28th. At the same time, the afternoon of the 27th, Washington sent word to General Mercer in New Jersey to march all the forces under his command "immediately to Powle's Hook";[160] they might be needed in New York, they might be needed on Long Island. By the morning of the 28th, the commander-in-chief had drawn to the Brooklyn lines all the troops that could be spared from other points, and all with which he proposed to resist the British if they attempted to carry his position by storm. He had on that side the largest and best part of his army. The whole of Greene's division was there, the whole of Spencer's, half of Sullivan's, one third of Putnam's, and a part of Heath's--in all not less than thirty-five regiments or detachments, which numbered together something over nine thousand five hundred men fit for duty.[161] [Footnote 160: This order was sent at two o'clock through General Wooster, then temporarily in New York, and Mercer received it in the evening near Newark. He sent word at once to the militia at Amboy, Woodbridge, and Elizabethtown to march to Powle's Hook. _Force_, 5th Series, vol. ii.]