"Under the pretense of supporting the Constitution, but in violation of its most valuable provisions, your citizens have been arrested and imprisoned upon no charge, and contrary to the forms of law.
"A faithful and manly protest against this outrage, made by a venerable and illustrious Marylander, to whom in his better days no citizen appealed for right in vain, was treated with scorn and contempt.
"The government of your chief city has been usurped by armed strangers; your Legislature has been dissolved by the unlawful arrest of its members; freedom of the press and of speech has been suppressed; words have been declared offenses by an arbitrary decree of the Federal Executive; and citizens ordered to be tried by military commissions for what they may dare to speak.
"Believing that the people of Maryland possess a spirit too lofty to submit to such a Government, the people of the South have long wished to aid yon in throwing off this foreign yoke, to enable you again to enjoy the inalienable rights of freemen, and restore the independence and sovereignty of your State.
"In obedience to this wish, our army has come among you, and is prepared to assist yon with the power of its arms in regaining the rights of which you have been so unjustly despoiled.
"This, citizens of Maryland, is our mission, so far as yon are concerned. No restraint upon your free-will is intended; no intimidation will be allowed within the limits of this army at least. Marylanders shall once more enjoy their ancient freedom of thought and speech. We know no enemies among you, and will protect all of you in every opinion.
"It is for you to decide your destiny freely and without constraint. This army will respect your choice, whatever it may be; and while the Southern people will rejoice to welcome you to your natural position among them, they will only welcome you when you come of your own free will.
"R. E. LEE, General commanding."
The commands of Longstreet and D. H. Hill, on their arrival at Sharpsburg, were placed in position along the range of hills between the town and the Antietam, nearly parallel to the course of that stream, Longstreet on the right of the road to Boonsboro and Hill on the left. The advance of the enemy was delayed by the determined opposition he encountered from Fitzhugh Lee's cavalry, and he did not appear on the opposite side of the Antietam until about 2 P.M. During the afternoon the batteries on each side were partially engaged. On the 16th the artillery-fire became warm, and continued throughout the day. A column crossed the Antietam beyond the reach of our batteries and menaced our left. In anticipation of this movement Hood's two brigades had been transferred from the right and posted between D. H. Hill and the Hagerstown road. General Jackson was now directed to take position on Hood's left, and formed his line with his right resting on the Hagerstown road and his left extending toward the Potomac, protected by General Stuart with the cavalry and horse-artillery. General Walker with his two brigades was stationed on Longstreet's right. As evening approached, the enemy fired more vigorously with his artillery and bore down heavily with his infantry upon Hood, but the attack was gallantly repulsed. At 10 P.M. Hood's troops were relieved by the brigades of Lawton and Trimble, of Ewell's division, commanded by General Lawton. Jackson's own division, under General J. K. Jones, was on Lawton's left, supported by the remaining brigades of Ewell.
At early dawn on the 17th his artillery opened vigorously from both sides of the Antietam, the heaviest fire being directed against our left. Under cover of this fire a large force of infantry attacked General Jackson's division. They were met by his troops with the utmost resolution, and for several hours the conflict raged with intense fury and alternate success. Our troops advanced with great spirit; the enemy's lines were repeatedly broken and forced to retire. Fresh troops, however, soon replaced those that were beaten, and Jackson's men were in turn compelled to fall back. Nearly all the field officers, with a large proportion of the men, were killed or wounded. Our troops slowly yielded to overwhelming numbers, and fell back, obstinately disputing every point. General Early, in command of Ewell's division, was ordered with his brigade to take the place of Jackson's division, most of which was withdrawn, its ammunition being nearly exhausted and its numbers much reduced. The battle now raged with great violence, the small commands under Hood and Early holding their ground against many times their own infantry force and under a tremendous fire of artillery. Hood was reënforced; then the enemy's lines were broken and driven back, but fresh numbers advanced to their support, and they began to gain ground. The desperate resistance they encountered, however, delayed their progress until the troops of McLaws arrived, and those of General J. G. Walker could be brought from the right. Hood's brigade, though it had suffered extraordinary loss, only withdrew to replenish their ammunition, their supply being entirely exhausted. They were relieved by Walker's command, who immediately attacked vigorously, driving his combatant back with much slaughter. Upon the arrival of the reënforcements under McLaws, General Early attacked resolutely the large force opposed to him. McLaws advanced at the same time, and the forces before them were driven back in confusion, closely followed by our troops beyond the position occupied at the beginning of the engagement.