The next morning, as Vaughan was returning to camp with only thirteen men, he ascended the hill which overlooked the battery, and observing that the chimneys in the barracks were without smoke, and the staff without its flag, he hired an Indian, with a bottle of rum, to crawl through an embrasure, and open the gate. Vaughan entered with his men and defended the battery against a party then landing to regain possession until the arrival of a reinforcement.
For fourteen nights successively, the troops were employed in dragging cannon from the landing place to the encampment, a distance of near two miles, through a deep morass. The army, being totally unacquainted with the art of conducting sieges, made its approaches irregularly, and sustained some loss on this account.
While these approaches were making by land, the ships of war which continued to cruise off the harbour, fell in with and captured the Vigilant, a French man of war of sixty-four guns, having on board a reinforcement of five hundred and sixty men, and a large quantity of stores for the garrison. Soon after this, an unsuccessful, and, perhaps, a rash attempt was made on the island battery by four hundred men; of whom sixty were killed, and one hundred and sixteen taken prisoners. All these prisoners, as if by previous concert, exaggerated the numbers of the besieging army, a deception which was favoured by the unevenness of the ground, and the dispersed state of the troops; and which probably contributed to the surrender of the place. The provincial army did indeed present a formidable front, but, in the rear, all was frolic and confusion.
The Vigilant had been anxiously expected by the garrison, and the information of her capture excited a considerable degree of perturbation. This event, with the erection of some works on the high cliff at the light house, by which the island battery was much annoyed, and the preparations evidently making for a general assault, determined Duchambon, the governor of Louisbourg, to surrender; and, in a few days, he capitulated.
Upon entering the fortress, and viewing its strength, and its means of defence, all perceived how impracticable it would have been to carry it by assault.[141]