November.
The preparations of Sir William Howe being completed, a large battery on Province Island of twenty-four and thirty-two pounders, and two howitzers of eight inches each, opened, early in the morning of the 10th of November, upon fort Mifflin, at the distance of five hundred yards, and kept up an incessant fire for several successive days. The block-houses were reduced to a heap of ruins; the palisades were beaten down; and most of the guns dismounted and otherwise disabled. The barracks were battered in every part, so that the troops could not remain in them. They were under the necessity of working and watching the whole night to repair the damages of the day, and to guard against a storm, of which they were in perpetual apprehension. If in the day, a few moments were allowed for repose, it was taken on the wet earth, which, in consequence of heavy rains, had become a soft mud. The garrison was relieved by General Varnum every forty-eight hours; but his brigade was so weak that half the men were constantly on duty.
Colonel Smith was decidedly of opinion, and General Varnum concurred with him, that the garrison could not repel an assault, and ought to be withdrawn; but General Washington still cherished the hope that the place might be maintained until he should be reinforced from the northern army. Believing that an assault would not be attempted until the works were battered down, he recommended that the whole night should be employed in making repairs. His orders were that the place should be defended to the last extremity; and never were orders more faithfully executed.
November 11.
Several of the garrison were killed, and among them Captain Treat, a gallant officer, who commanded the artillery. Colonel Smith received a contusion on his hip and arm which compelled him to give up the command, and retire to Red Bank. Major Fleury, a French officer of distinguished merit, who served as engineer, reported to the Commander-in-chief that, although the block-houses were beaten down, all the guns in them, except two, disabled, and several breaches made in the walls, the place was still defensible; but the garrison was so unequal to the numbers required by the extent of the lines, and was so dispirited by watching, fatigue, and constant exposure to the cold rains which were almost incessant, that he dreaded the event of an attempt to carry the place by storm. Fourteenth.Fresh troops were ordered to their relief from Varnum's brigade, and the command was taken, first by Colonel Russell, and afterwards by Major Thayer. The artillery, commanded by Captain Lee, continued to be well served. The besiegers were several times thrown into confusion, and a floating battery which opened on the morning of the 14th, was silenced in the course of the day.
Fifteenth.
The defence being unexpectedly obstinate, the assailants brought up their ships as far as the obstructions in the river permitted, and added their fire to that of the batteries, which was the more fatal as the cover for the troops had been greatly impaired. The brave garrison, however, still maintained their ground with unshaken firmness. In the midst of this stubborn conflict, the Vigilant and a sloop of war were brought up the inner channel, between Mud and Province Islands, which had, unobserved by the besieged, been deepened by the current in consequence of the obstructions in the main channel; and, taking a station within one hundred yards of the works, not only kept up a destructive cannonade, but threw hand grenades into them; while the musketeers from the round top of the Vigilant killed every man that appeared on the platform.
Major Thayer applied to the Commodore to remove these vessels, and he ordered six galleys on the service; but, after reconnoitring their situation, the galleys returned without attempting any thing. Their report was that these ships were so covered by the batteries on Province Island as to be unassailable.
Fort Mifflin evacuated and possession taken by the British.
November 16.