The marker for the Ninth Army Corps is on the east side of Branch Avenue near the Burnside Bridge Road. (Branch Avenue North tour map)

This information is displayed on two adjacent tablets:

U.S.A.

Ninth Army Corps

Brig. Gen. J. D. Cox, Commanding

September 17, 1862

On the morning of the 17th, the Ninth Army Corps was in position behind the ridges on the east bank of the Antietam.

At 1 P.M., Sturgis’ Division assaulted and carried the Burnside Bridge and formed line on the high ground west of the stream.

Crook’s Brigade of the Kanawha Division crossed and formed on Sturgis’ right in support.

Rodman’s Division crossed at Snavely’s Ford and formed on Sturgis’ left.

Ewing’s Brigade of the Kanawha Division crossed at Snavely’s Ford and formed in support of Rodman.

Between 2 and 3 P.M., Willcox’s Division crossed the bridge and relieved Sturgis.

Four Batteries of Artillery crossed the bridge and went into position along the line of battle.

No. 70

No. 70, cont.

About 3 P.M., Willcox’s and Rodman’s Divisions, with their supporting Brigades, advanced on Sharpsburg; Willcox following the road to the town, Rodman moving over the hill on his left.

The right of Willcox’s was checked on the high ground east of the Sharpsburg Road; the left, passing a few yards east of this point, gained the stone mill and the house beyond and penetrated the orchard, Crook’s Brigade moving up to this fence in support.

Rodman’s advance passed this road about 500 yards southwest of this point and, swinging to the right to close up on Willcox, advanced about 360 yards north and west of this point, driving the Confederates from their position.

Rodman’s left having been repulsed by the advance of A.P. Hill’s Division, the whole line, after a contest in which all the Brigades of the Corps were engaged, was drawn back to the cover of the high ground bordering the Antietam.