Toombs' brigade accompanied Longstreet's corps in its counter-march from [Hagarstown] to Hill's support. On the 14th of September these were withdrawn to the valley of the Antietam. The creek of Antietam runs obliquely to the source of the Potomac, and empties into that river six miles above Harper's Ferry. The Confederate lines were, on the 15th, drawn up in front of Sharpsburg, Longstreet being on the right of the road from Sharpsburg.
In this place the creek is crossed by four stone bridges, and three of these were strongly guarded by the Confederates. Burnside's army corps was stationed on the Sharpsburg Turnpike, directly in front of bridge No. 3. The preliminary deploy occupied the 16th of September, an artillery duel enlivening the time before the battle. Burnside lay behind the heights on the east bank of the Antietam and opposite the Confederate right, which, Swinton says, it was designed he should assail, after forcing the passage of the Antietam by the lower stone bridge. The part assigned to General Burnside was of the highest importance, for a successful attack by him upon the Confederate right, would, by carrying the Sharpsburg Crest, force Lee from his line of retreat by way of Shepherdstown. Swinton says this task should have been an easy one, for the Confederate forces at this point had been drawn upon to recruit the left where Hooker had made his furious assaults.
There was left in the right wing of the Confederate army but a single division of 2500 men under General D. R. Jones, and the force actually present to dispute the passage of the stone bridge did not exceed 400. These troops were under the direction of General Robert Toombs, and this engagement made his reputation as a fighter and was one of the most brilliant and memorable of the Civil War. It was one o'clock before Burnside charged. General Lee, in his report of the battle, said:
In the afternoon the enemy advanced on our right, where General Jones' division was posted, who handsomely maintained his position. General Toombs' brigade, guarding the bridge on Antietam Creek, gallantly resisted the approach of the enemy, but his superior number enabling him to extend his left, he crossed below the bridge and assumed a threatening attitude on our right, which fell back in confusion. By this time, between 3 and 4 o'clock p. m., A. P. Hill, with five of his brigades, reached the scene of action and drove the enemy from the position they had taken. The bridge was defended with two regiments of Toombs' brigade (2d and 20th) and the batteries of General Jones. General Toombs' small command repulsed five different assaults made by greatly superior forces, and maintained its position with distinguished gallantry.... Toombs charged the flank of the enemy, while Archer moved upon the front of the Federal line. The enemy made a brief resistance and then ran in confusion.
Such commendation from the commander-in-chief of the Confederate army speaks for itself.
Speaking of the last charge, when the Federals were driven back over the creek in the counter-attack, General Jones says:
General Toombs, whom I had sent for, arriving from the right with a portion of his brigade (11th Georgia Regiment) was ordered to charge the enemy. This he did most gallantly, supported by Archer's brigade, delivering fire at less than fifty yards, dashing at the enemy with the bayonet, forcing him from the crest and following him down the hill.
General Garnett's report credits Toombs with having "reënforced the right just after it had been driven back, and restored the fortunes of the day in that quarter."
From the report of General Toombs it appeared that when he first moved into Maryland he was assigned to command a division composed of Toombs', Drayton's, and Anderson's brigades, and took possession of [Hagerstown]. On September 14 he was ordered to Sharpsburg, two of his regiments having been sent to Williamsport to protect the wagon trains. With two small regiments left, General Toombs took position near the bridge over the Antietam on the road to Harper's Ferry. He took possession of the ground with the 20th Georgia Regiment, commanded by Colonel Jonathan B. Cumming, and the 2d Georgia Regiment, commanded by Colonel Holmes. The creek was comparatively straight by this bridge. He formed his regiments along the creek in more open order than was desirable on account of the smallness of his number. Subsequently the 50th Georgia, with scarcely 100 men, was placed under his command. Colonel Eubanks' battery was by order of General Longstreet placed in his rear. The enemy opened on his position on Tuesday evening, the 16th of September. On Wednesday morning, his pickets were driven in and the enemy menaced his position. The ground descended gently to the creek covered with a narrow strip of woods, affording slight protection. The enemy approached by the road parallel with his line of battle, he says, exposing his flank to a destructive fire. Between 9 a. m. and 1 p. m. the Federals made five attempts to carry the bridge, and were repulsed by the 2d and 20th Georgia regiments. Failing to wrest the bridge from its heroic defenders, the enemy turned his attention to the fords. "Not being able to get reënforcements, and seeing that the enemy would cross and attack my front, right flank, and rear, Colonel Holmes having been killed, Major Harris wounded, both regiments having suffered heavily, ammunition nearly exhausted, and the battery withdrawn, I withdrew my command to a position, designated by Longstreet, opposite the lower fords. This change of position was made very satisfactorily and without serious loss. The 15th and 17th Georgia regiments and part of the 11th, previously detached, now came up and occupied the new position. The 20th and 2d went to the ammunition train to replenish their cartridge boxes. The enemy moved through the bridge and ford with extreme caution, and lost nearly two hours in crossing, about which time A. P. Hill's division came from Harper's Ferry. I was ordered by Longstreet to put my command in motion to meet the enemy. I found them in possession of the ground I was ordered to occupy, including the bridge road and the suburbs of Sharpsburg. With less than one-fifth the numbers of the enemy and within 100 paces of his lines I determined to give battle. I had instantly to determine either to retreat or to fight. A retreat would have left the town of Sharpsburg and General Longstreet's rear open to the enemy. The enemy advanced in good order to within sixty or eighty paces, when the effectiveness of the fire threw his column into considerable confusion, perceiving which I instantly ordered a charge, which was brilliantly executed by my whole line. The enemy fled in confusion toward the river, making two or three efforts to rally, which were soon defeated. The enemy brought over the bridge a battery. I ordered Richardson's battery to open upon it, and at the same time the 15th and 20th Georgia charged upon it and compelled it to rejoin the flying infantry. I desired to pursue the enemy across the river, but, being deficient in artillery, I sent to General Lee for a battery, which came up too late. I then determined to move my troops to my first position along the river, but received the order to occupy the heights on the opposite side of the road leading to the bridge from Sharpsburg, and there the troops bivouacked for the night."
The gallant conduct of Toombs' brigade at Sharpsburg was the theme on both sides. The country rang with its exploits and the fiery Georgia brigadier became the toast of the army. Burnside's heavy losses abundantly proved the stoutness of the resistance and the deadliness of the charges of the Georgia troops.