First Brigade
First Division - Twelfth Corps
Army of the Potomac
Twelfth Corps First Division
First Brigade
Col. Archibald L. McDougall
5th. 20th. Connecticut, 3d. Maryland
123d. 145th. New York, 46th. Penna. Infantry
July 1 Marched from Littlestown and when within two miles of Gettysburg advanced on Wolf Hill then occupied by a Confederate force. Retired and bivouacked until morning.
July 2 Crossed Rock Creek in the morning and formed in two lines on Culp's Hill to the right of Second Division. The rear line behind a stone wall the front line forty yards in front where breastworks were immediately constructed. Late in the day went to support of Third Corps line and after dark returned and found the works and woods in rear in possession of Major Gen. Johnson's Confederate Division.
July 3 At daylight the Brigade with the Artillery and Infantry of the Corps attacked Major Gen. Johnson's Division which had been reinforced from Major Gen. Early's and Major Gen. Rodes's Divisions and at 10.30 a.m. recaptured the works after a fierce contest in the afternoon sent to the support of Second Corps.
July 4 The 123d New York, 5th Conn. and 46th Penna. with the regiments of Third Brigade and a Battery made a reconnaissance in the morning in front and to the town of Gettysburg under Col. S. Colgrove and Major Gen. H.W. Slocum and found no Confederate forces.
Casualties. Killed 1 Officer 11 men. Wounded 4 officers 56 men. Captured or missing 1 officer 7 men. Total 80.
Marker is on Slocum Avenue, on the right when traveling west.
Courtesy hmdb.org