Friday, January 15, 1864
Private Oliver Stanton Bates returned to military service with Company A of the Twentieth Massachusetts during the month of January. This was his first service with the Twentieth Massachusetts since Gettysburg, where he was severely wounded during the repulse of Pickett's Charge at the Angle on July 3, 1863. His exact date of return is unclear from his military records, but he was reported present during January 1864 muster rolls.1
1Compiled service record, Oliver S. Bates, Pvt., Co. A, 20th Massachusetts Infantry; Carded Records, Volunteer Organizations, Civil War; Records of the Adjutant General's Office, 1780s-1917, Record Group 94; National Archives, Washington, D.C.