General Pigot, accordingly, advanced up the hill under cover of a fire from field-pieces and howitzers planted on a small height near the landing-place on Moulton's Point. His troops commenced a discharge of musketry while yet at a long distance from the redoubts. The Americans within the works, obedient to strict command, retained their fire until the enemy were within thirty or forty paces, when they opened upon them with a tremendous volley. Being all marksmen, accustomed to take deliberate aim, the slaughter was immense, and especially fatal to officers. The assailants fell back in some confusion; but, rallied on by their officers, advanced within pistol shot. Another volley, more effective than the first, made them again recoil. To add to their confusion, they were galled by a flanking fire from the handful of Provincials posted in Charlestown. Shocked at the carnage, and seeing the confusion of his troops, General Pigot was urged to give the word for a retreat. In the mean while, General Howe, with the right wing, advanced along Mystic River toward the fence where Stark, Read and Knowlton were stationed, thinking to carry this slight breastwork with ease, and so get in the rear of the fortress. His artillery proved of little avail, being stopped by a swampy piece of ground, while his columns suffered from two or three fieldpieces with which Putnam had fortified the fence. Howe's men kept up a fire of musketry as they advanced; but, not taking aim, their shot passed over the heads of the Americans. The latter had received the same orders with those in the redoubt, not to fire until the enemy should be within thirty paces. Some few transgressed the command. Putnam rode up and swore he would cut down the next man that fired contrary to orders. When the British arrived within the stated distance a sheeted fire opened upon them from rifles, muskets, and fowling-pieces, all levelled with deadly aim. The carnage, as in the other instance, was horrible. The British were thrown into confusion and fell back; some even retreated to the boats. There was a general pause on the part of the British. The American officers availed themselves of it to prepare for another attack, which must soon be made. Prescott mingled among his men in the redoubt, who were all in high spirits at the severe check they had given "the regulars." He praised them for their steadfastness in maintaining their post, and their good conduct in reserving their fire until the word of command, and exhorted them to do the same in the next attack.