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With full confidence, therefore, that he would have time to enforce the surrender of Harper’s Ferry and to join Lee on the further bank of the Potomac, the progress of his attack was cautious and methodical. “The position in front of me,” he wrote to McLaws, “is a strong one, and I desire to remain quiet, and let you and Walker draw attention from Furnace Hill (west of Bolivar Heights), so that I may have an opportunity of getting possession of the hill without much loss.” It was not, then, till the artillery had been long in action, and the fire of the enemy’s guns had been in some degree subdued, that the infantry was permitted to advance. Although the Federal batteries opened vigorously on the lines of skirmishers, the casualties were exceedingly few. The troops found cover in woods and broken ground, and before nightfall Hill had driven in the enemy’s pickets, and had secured a knoll on their left flank which afforded an admirable position for artillery. Lawton, in the centre, occupied a ridge over which ran the Charlestown turnpike, brought his guns into action, and formed his regiments for battle in the woods. Jones’ division held the Shepherdstown road on Lawton’s left, seized Furnace Hill, and pushed two batteries forward.
No attempt was made during this Sunday evening to storm the Bolivar Heights; and yet, although the Confederate infantry had been hardly engaged, the enemy had been terribly shaken. From every point of the compass, from the lofty crests which looked down upon the town, from the woods towards Charlestown, from the hill to westward, a ceaseless hail of shells had swept the narrow neck to which the garrison was confined. Several guns had been dismounted. More than one regiment of raw troops had dispersed in panic, and had been with difficulty rallied. The roads were furrowed with iron splinters. Many buildings had been demolished, and although the losses among the infantry, covered by their parapets, had been insignificant, the batteries had come almost to their last round.
During the night Jackson made preparations for an early assault. Two of A. P. Hill’s brigades, working their way along the bank of the Shenandoah, over ground which the Federal commander had considered impassable, established themselves to the left rear of the Bolivar Heights. Guns were brought up to the knoll which Hill had seized during the afternoon; and ten pieces, which Jackson had ordered to be taken across the Shenandoah by Keyes’ Ford, were placed in a position whence they could enfilade the enemy’s works at effective range. Lawton and Jones pushed forward their lines until they could hear voices in the intrenchments; and a girdle of bayonets, closely supported by many batteries, encircled the hapless Federals. The assault was to be preceded by a heavy bombardment, and the advance was to be made as soon as Hill’s guns ceased fire.
Sept. 15 All night long the Confederates slept upon their arms, waiting for the dawn. When day broke, a soft silver mist, rising from the broad Potomac, threw its protecting folds over Harper’s Ferry. But the Southern gunners knew the direction of their targets; the clouds were rent by the passage of screaming shells, and as the sun, rising over the Loudoun Heights, dispersed the vapour, the whole of Jackson’s artillery became engaged. The Federal batteries, worked with stubborn courage, and showing a bold front to every fresh opponent, maintained the contest for an hour; but, even if ammunition had not failed them, they could not have long withstood the terrible fire which took them in front, in flank, and in reverse.[[20]] Then, perceiving that the enemy’s guns were silenced, Hill ordered his batteries to cease fire, and threw forward his brigades against the ridge. Staunch to the last, the Federal artillerymen ran their pieces forward, and opened on the Confederate infantry. Once more the long line of Jackson’s guns crashed out in answer, and two batteries, galloping up to within four hundred yards of the ridge, poured in a destructive fire over the heads of their own troops. Hill’s brigades, when the artillery duel recommenced, had halted at the foot of the slope. Beyond, over the bare fields, the way was obstructed by felled timber, the lopped branches of which were closely interlaced, and above the abattis rose the line of breastworks. But before the charge was sounded the Confederate gunners completed the work they had so well begun. At 7.30 a.m. the white flag was hoisted, and with the loss of no more than 100 men Jackson had captured Harper’s Ferry with his artillery alone.
The general was near the church in the wood on the Charlestown road, and Colonel Douglas was sent forward to ascertain the enemy’s purpose. “Near the top of the hill,” he writes, “I met General White (commanding the Federals), and told him my mission. Just then General Hill came up from the direction of his line, and on his request I conducted them to General Jackson, whom I found sitting on his horse where I had left him. He was not, as the Comte de Paris says, leaning against a tree asleep, but exceedingly wide-awake. . . . The surrender was unconditional, and then General Jackson turned the matter over to General A. P. Hill, who allowed General White the same liberal terms that Grant afterwards gave Lee at Appomattox. The fruits of the surrender were 12,520 prisoners, 13,000 small arms, 73 pieces of artillery, and several hundred waggons.
“General Jackson, after a brief dispatch to General Lee announcing the capitulation, rode up to Bolivar and down into Harper’s Ferry. The curiosity in the Union army to see him was so great that the soldiers lined the sides of the road. Many of them uncovered as he passed, and he invariably returned the salute. One man had an echo of response all about him when he said aloud: ‘Boys, he’s not much for looks, but if we’d had him we wouldn’t have been caught in this trap.’”[[21]]
The completeness of the victory was marred by the escape of the Federal cavalry. Under cover of the night 1,200 horsemen, crossing the pontoon bridge, and passing swiftly up the towpath under the Maryland Heights, had ridden boldly beneath the muzzles of McLaws’ batteries, and, moving north-west, had struck out for Pennsylvania. Yet the capture of Harper’s Ferry was a notable exploit, although Jackson seems to have looked upon it as a mere matter of course.
“Through God’s blessing,” he reported to Lee at eight o’clock, “Harper’s Ferry and its garrison are to be surrendered. As Hill’s troops have borne the heaviest part of the engagement, he will be left in command until the prisoners and public property shall be disposed of, unless you direct otherwise. The other forces can move off this evening so soon as they get their rations. To what point shall they move? I write at this time in order that you may be apprised of the condition of things. You may expect to hear from me again to-day, after I get more information respecting the number of prisoners, etc.”[[22]]