Twelfth U.S. Infantry
First Brigade - Second Division
Army of the Potomac
Fifth Corps
Second Division
First Brigade
Twelfth U.S. Infantry
Eight Companies
Captain Thomas S. Dunn Commanding
July 2 Arrived in the morning and took position with the Brigade and Division near the Twelfth Corps on the right. Moved with the Division from the right to the left of the line and at 5 p.m. with the Brigade moved across Plum Run near Little Round Top and supported the Second Brigade in its advance to the crest of the rocky wooded hill in front and facing left engaged the Confederates but retired under a heavy fire on both flanks and from the rear after the Confederates had obtained possession of the Wheatfield in the rear of the Brigade and went into position on Little Round Top.
July 3 Remained in same position.
July 4 Regiment with the 14th supported the 3d, 4th, and 8th U.S. Infantry in a reconnoissance and developed a force of the Confederate Infantry and Artillery in front.
Casualties. Killed 1 officer 7 men. Wounded 4 officers 87 men. Missing 13 men.
Marker is on Ayres Avenue, on the left when traveling west.
Courtesy hmdb.org
