General Pendleton reported the result to general head-quarters, and General Lee ordered General Jackson to send his nearest division back to the ford early in the morning.
A. P. Hill’s division was ordered. He was fortunate in approaching the ford (Boteler’s) before the Federals had crossed all of their advancing column; formed his brigades in two lines and advanced to attack. General Porter, upon the report of this advance, found that his troops could not get position on the south bank in time to meet this threatening, ordered the troops withdrawn to cover about the canal and adjacent heights, and succeeded in getting most of his men safely back.
General Hill deployed the brigades of Gregg, Thomas, and Pender as his front line, under command of General Gregg. Lane’s (Branch’s brigade), Archer’s, and Brockenbrough’s brigades were of his second line, commanded by General Archer. In this order the division advanced and engaged in a severe struggle. Finding the fight on his front heavy, General Pender called to General Archer for support, and the latter, moving by his left, brought his brigade on Pender’s left, when the advance was pushed to successful issue. The One Hundred and Eighteenth Pennsylvania Regiment was thrown into confusion and suffered heavy loss. One of the guns lost the day before was recovered and two hundred prisoners taken. The losses were between two hundred and fifty and three hundred on each side, the Federals losing about twenty more than the Confederates. The Confederate accounts of this affair were overdrawn, but they were reassuring after the severe experience about South Mountain and Sharpsburg.
The Army of Northern Virginia was then marched to the vicinity of Martinsburg, where it remained in repose for several days, then retired to the vicinity of Winchester. The Army of the Potomac concentrated about Harper’s Ferry, refitting its supplies and transportation.
We may say of the battle of Sharpsburg that the Confederates foiled every attack that was made, and brought the Army of the Potomac to a stand at night, yet the Federal commander scored a success that was startling.
The commander of the Army of the Potomac reported his strength as 87,164. His estimate of the strength of the Army of Northern Virginia was 97,445. The Confederate commander estimated his own strength for battle at 37,000, and that of his adversary at 90,000.
The Confederates fought all of their men that were on the field, except two brigades of A. P. Hill’s division and some of their field batteries.
Of the Federals, the Fifth Corps, except about one brigade of infantry, was not in action; and the Sixth Corps, except Irwin’s brigade, seems to have had little serious work.
It is generally conceded that the Federals, in addition to advantage of numbers, had their organizations in hand, were better fed and clothed, and better prepared, therefore, to muster a larger portion of their number for battle.
The casualties of the First Corps, Army of Northern Virginia, in the engagements at South Mountain, Crampton’s Gap, Maryland Heights, Harper’s Ferry, and Sharpsburg, as tabulated in the official report, were 7508.[69] Neither General Jackson’s report nor General D. H. Hill’s furnishes a detailed account of casualties. The former gives aggregate figures 2438, the latter 3241,—making a grand aggregate of 13,187.[70] None of these reports include the losses of the cavalry command, nor is there a report of them found among the Records.