The marker for Hays’ Brigade of Ewell’s Division is on the west side of Hagerstown Pike north of the Dunkard Church. (Visitor Center – Dunker Church tour map)Hays' Brigade, Ewell's Division, marker 342 of the War Department Confederate markers at Antietam

From the marker:

C.S.A.
Jackson’s Command

Hays’ Brigade, Ewell’s Division

Brigadier General Harry T. Hays, Commanding.

Organization.
5th Louisiana Infantry
6th Louisiana Infantry
7th Louisiana Infantry
8th Louisiana Infantry
14th Louisiana Infantry

(September 16-17, 1862.)

Hays’ Brigade encamped on the night of the 16th in the woods northwest of the Dunkard Church. Soon after daylight on the 17th, it advanced and, near this point, crossed the Hagerstown Pike to fill an interval between the Brigades of Lawton and Trimble. Afer a short halt in the open fields south of the Cornfield, it was ordered to the support of Lawton’s Brigade. It advanced into the Cornfield about 150 yards beyond Lawton, where, having lost more than half its numbers, it was relieved by Wofford’s Brigade of Hood’s Division and withdrawn to the fields southwest of the Dunkard Church.

No. 342.