Further information: Organization of the forces operating against Richmond, on the morning of May 5, 1864: Official Records, Series I, Volume XXXVI, Part 1, pages 106-116.
This Army Corps was under direct orders of Lieut. Gen. Ulysses S. Grant until May 24, 1864, when it was assigned to the Army of the Potomac. See: Official Records, Series I, Volume XXXVI, Part 1, page 113 (note at the bottom of the page).
"Present for duty" (April 30, 1864): Army of the Potomac: 102,869; IX Army Corps: 21,363. See Abstract from tri-monthly return of the Army of the Potomac, Maj. Gen. George G. Meade, U.S. Army commanding, April 30, 1864 (Official Records, Series I, Volume XXXVI, Part 1, page 198) and Abstract from return of the Ninth Army Corps, commanded by Maj. Gen. Ambrose E. Burnside, U.S. Army, for April 30, 1864 (Official Records, Series I, Volume XXXVI, Part 1, page 915).
Return of Casualties in the Union forces, Battle of Wilderness, May 5–7, 1864 (Recapitulation): Official Records, Series I, Volume XXXVI, Part 1, page 133.
nps.gov
NPS. There was no significant fighting on May 7 and some authors, such as Welcher, p. 941, use the dates May 5–6.
