The marker for Richardson’s Division of the Second Army Corps is on the north side of Boonsboro Pike, east of the Middle Bridge.

From the marker:

U.S.A.

Richardson’s Division, Second Army Corps

Maj. Gen. Israel B. Richardson, Commanding.

(September 15-16, 1862.)

On the night of September 15, 1862, the Division was posted at the foot of the ridge on the north side of this road to hold the bridge across the Antietam and secure the crossing for the movement of September 16. The Division occupied this position until the morning of September 17, when it was relieved by Morell’s Division of the Fifth Corps.

No. 34.