Monument is located on Union Avenue, 250 yards south of the Iowa Memorial. Also a marker designating the assault on 22 May 1863, located on Union Avenue at the first turn past Park Tour Stop #15. This unit was attached to Brig. Gen. Albert L. Lee's (wounded 19 May 1863) and Col. James Keigwin's 1st Brigade, of Brig. Gen. Peter J. Osterhaus' 9th 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 Col. Marcus M. Speigel.
120th Ohio Infantry