Reorganization, Army of the Cumberland by General Thomas
April 1, 1864 (communicated April 2, 1864).
Special Field Orders 93
Headquarters, Department of the Cumberland, Chattanooga, April 2, 1864
VIII. The following is announced as the organization of the cavalry of this department, to take effect April 1, 1864:
First Division, Col. Edward M. McCook, commanding:
First Brigade: Second Michigan Cavalry, First Tennessee Cavalry, Eighth Iowa Cavalry.
[etc., others are named]
(By order of Gen. George H. Thomas, through staff)
Official Records, Series 1, Volume 32, Part 3 (Correspondence, etc.), 238.