August 1864 • to September >
Commanded by Major General Philip H. Sheridan
The Army of the Shenandoah, formally known as the Middle Military Division, Department of the Shenandoah, was organized in August of 1864 by the transfer of the 6th Army Corps and the 1st and 3rd Cavalry Divisions from the Army of the Potomac, the detachment of the 19th Army Corps from the Department of the Gulf, added to the Army of West Virginia (Eighth Corps).
| Sixth Army Corps | Major General Horatio Wright | |
| First Division | Brigadier General David A. Russel | |
| Second Division | Brigadier General George W. Getty | |
| Third Division | Brigadier General John B. Ricketts | |
| Eighth Army Corps (Army of West Virginia) |
Brevet Major General George Crook | |
| First Infantry Division | Brigadier General Joseph Thoburn | |
| Second Infantry Division | Colonel Issac H. Duval | |
| Nineteenth Army Corps | Brigadier General William H. Emory | |
| First Division | Brigadier General William Dwight | |
| Second Division | Brigadier General Cuvier Grover | |
| Cavalry Corps | Brigadier General Alfred T. A. Torbert | |
| First Cavalry Division | Brigadier General Wesley Merritt | |
| Second Cavalry Division | Brigadier General W.W. Averill | (Army of West Virginia) |
| Third Cavalry Division | Brigadier General James H. WIlson | |
| Horse Artillery | ||
| 6th New York Independent Battery | ||
| 1st United States Artillery, Battys. K&L | ||
| 2nd United States Artillery, Battys. B&L | ||
| 2nd United States Artillery, Battery D | ||
| 2nd United States Artillery, Battery M | ||
| 3rd United States Artillery, Battys. C,F&K | ||
| 4th United States Artillery, Batteries C&E | ||