Colonel D. H. Miles, the Federal commander at Harper’s Ferry, was mortally wounded, and the actual surrender was made by General White, who gave up eleven thousand prisoners, thirteen thousand small-arms, seventy-two cannon, quantities of quartermaster’s stores and of subsistence.[62]
General Franklin had posted his division under General Couch at Rohrersville on the morning of the 15th, and proceeded to examine McLaws’s line established the night before across Pleasant Valley. He found the Confederates strongly posted covering the valley, their flanks against the mountain-side. Before he could organize for attack the firing at Harper’s Ferry ceased, indicating surrender of that garrison and leaving the troops operating there free to march against him. He prepared, therefore, for that eventuality.
The “lost order” directed the commands of Generals Jackson, McLaws, and Walker, after accomplishing the objects for which they had been detached, to join the main body of the army at Boonsborough or Hagerstown. Under the order and the changed condition of affairs, they were expected, in case of early capitulation at Harper’s Ferry, to march up the Rohrersville-Boonsborough road against McClellan’s left. There were in those columns twenty-six of General Lee’s forty brigades, equipped with a fair apportionment of artillery and cavalry. So it seemed to be possible that Jackson would order McLaws and Walker up the Rohrersville road, and move with his own corps through the river pass east of South Mountain, against McClellan’s rear, as the speedier means of relief to General Lee’s forces. But prudence would have gone with the bolder move of his entire command east of the mountain against McClellan’s rear, with a fair field for strategy and tactics. This move would have disturbed McClellan’s plans on the afternoon of the 15th, while there seemed little hope that McClellan would delay his attack until Jackson could join us, marching by the south side.
The field, and extreme of conditions, were more encouraging of results than was Napoleon’s work at Arcola.
General Jackson judged it better to join us by the south side, marched promptly with two of his divisions (leaving A. P. Hill with six brigades to receive the surrender and captured property), then ordered Walker’s and McLaws’s troops to follow his march. With his report of surrender of the garrison he sent advice of his march by the south side to join us.
At daylight on the 15th the head of General Lee’s column reached the Antietam. General D. H. Hill, in advance, crossed and filed into position to the left of the Boonsborough turnpike, G. B. Anderson on his right, Garland’s brigade under Colonel McRae, Ripley, and Colquitt, Rodes in rear near Sharpsburg, my command on his right. The two brigades under Hood were on my right, Kemper, Drayton, Jenkins (under Colonel Walker), Washington Artillery, on the ridge near the turnpike, and S. D. Lee’s artillery. Pickett’s brigade (under Garnett) was in a second line, G. T. Anderson’s brigade in rear of the battalions, Evans’s brigade on the north side of the turnpike; Toombs’s brigade joined and was posted at bridge No. 3 (Burnside Bridge). As the battalions of artillery attached to the divisions were all that could find places, General Lee sent the reserve artillery under General Pendleton across the Potomac.
As soon as advised of the surrender and Jackson’s march by the south side, my brigades under Hood were moved to the extreme left of the line, taking the division of General D. H. Hill within my limits, while three of S. D. Lee’s batteries were sent in support of Hood’s brigades. The pursuit ordered by General McClellan was the First, Second, and Twelfth Corps by the Boonsborough turnpike, the Ninth Corps and Sykes’s division of the Fifth by the old Sharpsburg road;[63] the Ninth and Fifth to reinforce Franklin by the Rohrersville road, or move to Sharpsburg.
About two o’clock in the afternoon the advance of the Union army came in sight. General Porter had passed the Ninth Corps with his division under Sykes and joined Richardson’s division of the Second. These divisions deployed on the right and left of the turnpike and posted their batteries, which drew on a desultory fire of artillery, continuing until night. The morning of the 16th opened as the evening of the previous day closed, except for the arrival of the remainder of the Union troops. The Ninth Corps took post at the lower bridge opposite the Confederate right, the First, the other divisions of the Second, and the Twelfth Corps resting nearer Keedysville. The display of their finely appointed batteries was imposing, as seen from Sharpsburg Heights.
Before maturing his plans, General McClellan had to make a careful reconnoissance, and to know of the disposition to be made of the Confederate forces from Harper’s Ferry.
Of the latter point he was informed, if not assured, before he posted the Ninth Corps. Four batteries of twenty-pound Parrotts were planted on the height overlooking the Antietam on their right; on the crest near the Burnside Bridge, Weed’s three-inch guns and Benjamin’s twenty-pound Parrotts. At intervals between those were posted some ten or more batteries, and the practice became more lively as the day wore on, till, observing the unequal combat, I ordered the Confederates to hold their ammunition, and the batteries of the other side, seeming to approve the order, slackened their fire.