The marker for Magilton’s Brigade of Meade’s Division is on the north side of Mansfield Avenue, north of the North Woods. (Mansfield Avenue tour map; 39°29’19.7″N 77°44’45.8″W; map location). It is next to the monument to the 3rd Pennsylvania Reserves and a marker for Magilton’s Bivouac.

From the marker:

U.S.A.
First Army Corps

Magilton’s Brigade, Meade’s Division 

Col. Albert Magilton, 4th Penn. Reserves, Commanding.

Organization.
3rd Penn. Reserve Infantry
4th Penn. Reserve Infantry
7th Penn. Reserve Infantry
8th Penn. Reserve Infantry

September 17, 1862.

Magilton’s Brigade formed line at 5:30 A.M., it advanced through the North Woods, deployed in the open fields and had reached the north fence of the Cornfield when it was sent to the left in support of Seymour and Ricketts. Its ammunition having been exhausted, it was relieved by Williams’ Division of the Twelfth Corps and withdrawn to the ridge in rear of Joseph Poffenberger’s.

No. 16.