At the Siege of Vicksburg, 1SG Marshall and the 83rd Ohio participated in two separate assaults upon the Confederate works and conducted siege operations that culminated in the 4 July 1863 surrender of the city.

Sources used for this episode:

Marshall, Thomas B. History of the Eighty-Third Ohio Volunteer Infantry, The Greyhound Regiment. Cincinnati: The Eighty-Third Ohio Volunteer Infantry Association, 1912. https://www.loc.gov/item/13020149/.

Scott, Robert N. The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies. Ser. 1, Vol. 24, Pt. 1. Washington: Government Printing Office, 1889. https://babel.hathitrust.org/cgi/pt?id=coo.31924077699738&view=1up&seq=3.

Scott, Robert N. OR. Ser. 1, Vol. 24, Pt. 2. Washington: Government Printing Office, 1889. https://babel.hathitrust.org/cgi/pt?id=coo.31924077723033&view=1up&seq=3.