By the following morning, September 15, Jackson had…

““By the following morning, September 15, Jackson had positioned nearly fifty guns on Maryland Heights and at the base of Loudoun Heights.  Then he began a fierce artillery barrage from all sides, followed by a full-out infantry assault.  Realizing the hopelessness of the situation, Col. Miles raised the white flag of surrender, enraging some of the men, one of whom beseeched him, “Colonel, don't surrender us. Don't you hear the signal guns? Our forces are near us. Let us cut our way out and join them." Miles dismissed the suggestion, insisting, “They will blow us out of this place in half an hour." Almost on cue, an exploding artillery shell mortally wounded Miles, and some historians have argued Miles was fragged by Union soldiers. Jackson had lost less than 300 casualties while forcing the surrender of nearly 12,500 Union soldiers at Harpers Ferry, the largest number of Union soldiers to surrender at once during the entire war. For the rest of the day, the Confederates helped themselves to supplies in the garrison, including food, uniforms, and more, as Jackson sent a letter to Lee informing him of the success, "Through God's blessing, Harper's Ferry and its garrison are to be surrendered." Already a legend, Jackson earned the attention of the surrendered Union troops, who tried to catch a glimpse of him only to be surprised at his rather disheveled look. One of the men remarked, "Boys, he isn't much for looks, but if we'd had him we wouldn't have been caught in this trap." Jackson””

— Charles River Editors