1st United States Infantry [Siege Guns] Companies A, B, C, D, H, I
Iron tablets located at Battery McPherson on the south side of Old Jackson Road, 300 yards east of the Shirley House, on the south side of Old Hwy 27, at Maloney Circle east of the old railroad bridge, and in Maloney Circle off Old Hwy 27 west of the old railroad bridge. This unit was attached to Brig. Gen. William P. Benton's, Col. Henry D. Washburn's (assumed command 31 May 1863) and Col. David Shunk's (assumed command 27 June 1863) 1st Brigade, of Brig. Gen. Eugene A. Carr's 14th Division, Maj. Gen'ls John A. McClernand's (relieved of command 19 June 1863) and Edward O.C. Ord's XIII Army Corps, and commanded by Maj. Maurice Maloney.
A detachment under the command of Maj. Maloney served two 30-pdr. Parrott rifles from 20 May 1863, and two 8" Dahlgren guns from 20 June 1863 (called Battery Maloney), to the end of the siege, in the general area of the position now known as Maloney's Circle. A detachment of the regiment commanded by Capt. E.D. Phillips served a 30-pdr. Parrott rifle in the position now known as Maloney's Circle from 21 May 1863, to the end of the siege. A third detachment of the regiment, under Capt. Robert Hilton Offley, served two 30-pdr. Parrott rifles from the afternoon of 21 May 1863, and two 9" muzzle-loading Dahlgren guns from 11 June 1863, to 19 June 1863, at Battery McPherson.
The two Parrott rifles were moved to an advanced battery on 19 June 1863. The two Dahlgren guns were served in Battery McPherson until the end of the siege on 4 July 1863. Capt. Robert Hilton Offley was wounded on 19 May 1863, and Lt. Charles Wilkins was mortally wounded on 25 May 1863. Total casualties reported during the campaign were six wounded. [Refer to pages 567, 580, and 583, Volume 2 of the WPA Monumentation Survey Books.]