The marker for Morrel’s Division of the Fifth Army Corps is on the north side of Boonsboro Pike, northeast of the Middle Bridge.Morrel's Division, Fifth Army Corps, marker 26 of the War Department Union markers at Antietam

From the marker:

U.S.A.

Morrel’s Division, Fifth Army Corps

Maj. Gen. George W. Morrell, Commanding.

September 17 and 18, 1862.

Morell’s Division relieved Richardson’s Division of the Second Corps at about 8:30 A.M., Sept. 17.

Two Brigades of this Division were withdrawn at about 2 P.M. of the 17th and sent to the assistance of General Sumner on the extreme right, but returned, without becoming engaged after dark on the same day.

On Sept. 18, Morell’s Division relieved the Ninth Corps at the Burnside Bridge.

No. 26.