Union XII Corps

      General Joseph K. Mansfield                      General Henry Warner Slocum                General Alpheus S. Williams                     General John W. Geary


Colonel Archibald L. McDougall

Colonel Archibald L. McDougall, Commander, 1st Brigade, 1st Division, Union XII Corps

Colonel McDougall commanded the 5th and the 20th Connecticut, the 3rd Maryland, the 123rd, 145th New York, and the 46th Pennsylvania infantry regiments.

Pfanz, Harry W. Gettysburg: Culp's Hill and Cemetery Hill. Chapel Hill: University of North Carolina Press, 1993.

U.S. War Department. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies. 128 vols. Washington, DC: GPO, 1881-1901. Series 1.