The marker for Hofmann’s Brigade of Doubleday’s Division is on the east side of Hagerstown Pike, near the Hagerstown Pike bypass. (Mansfield Avenue tour map)

From the marker:

U.S.A.
First Army Corps

Hofmann’s Brigade, Doubleday’s Division

Lieut. Col. J. Wm. Hofmann, 56th Penn. Inf., Commanding.

Organization.
7th Indiana Infantry
76th New York Infantry
95th New York Infantry
56th Pennsylvania Infantry
September 17, 1862.

Hofmann’s Brigade was held in support of the Corps Artillery.

About noon it was moved to the left in support of the Artillery of the First and Second Corps.

In the afternoon it was returned to the right where it remained until the close of the battle.

No. 4.