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Commanded by Major General George Meade
Two of the three divisions of the Cavalry Corps were sent to the Army of the Shenandoah on August 8, 1864.
Headquarters | 
||
| Headquarters Staff | ||
| Chief of Staff | Major General Andrew A. Humphreys | |
| Chief of Artillery | Brigadier General Henry J. Hunt | |
| Chief Engineer | ||
| Assistant Adjutant General | Brigadier General Seth Williams | |
| Inspector General | ||
| Chief Quartermaster | Lieutenant Colonel Rufus Ingalls | |
| Medical Director | Surgeon Jonathan Letterman | |
| Bureau of Military Information | Colonel George H. Sharpe | |
| Headquarters escort | ||
| Oneida (New York) Cavalry Company | Captain Daniel P. Mann | |
| Provost Guard | Brigadier General Marsena L. Patrick | |
| 1st Massachusetts Cavalry, Cos. C&D | ||
| 80th New York Infantry Regiment | Colonel Jacob Hardenberg | |
| 3rd Pennsylvania Cavalry Regiment | ||
| 68th Pennsylvania Infantry Regiment | ||
| 114th Pennsylvania Infantry Regiment | ||
| Engineer Brigade | Brigadier General Daniel Woodbury | |
| 15th New York Engineer Regiment | Major Walter N. Cassin | |
| 50th New York Engineer Regiment | Lieutenant Colonel William H. Pettes | |
| Regular Engineer Battalion | Captain George Henry Mendell | |
Second Corps | 
Major General Winfield S. Hancock  | 
|
| 1st Division | Brigadier General Nelson Miles | |
| 2nd Division | Colonel T. A. Smythe (to 8/22) Major General John Gibbon  | 
|
| 3rd Division | Brigadier General Gershom Mott | |
Fifth Corps | 
Major General Gouverneur K. Warren | |
| 1st Division | Brigadier General Joseph J. Bartlett (to 8/9) Brigadier General Charles Griffin  | 
|
| 2nd Division | Brigadier General Romeyn B. Ayres | |
| 3rd Division | Brigadier General Samuel W. Crawford | |
| 4th Division | Brigadier General Lysander Cutler (w 8/21) | discontinued 8/24 | 
Ninth Corps | 
Major General Ambrose E. Burnside (to 8/14) Major General John G. Parke  | 
|
| 1st Division | Brigadier General James Ledlie (to 8/6) Brigadier General Julius White (to 8/28) Brigadier General John Hartranft  | 
|
| 2nd Division | Brigadier General R. B. Potter | |
| 3rd Division | Brigadier General Orlando B. Wilcox | |
| 4th Division | Brigadier General Edward Ferrero | |
Cavalry Corps | 
Major General Philip H. Sheridan (to 8/2) Brigadier General David McM. Gregg (to 8/6)  | 
Two divisions sent to Army of the Shenandoah on 8/8. | 
| 1st Division | Brigadier General A. T. A. Torbert | to Army of the Shenandoah 8/6 | 
| 2nd Division | Brigadier General David McM. Gregg (^ 8/2) Colonel John I. Gregg (to 8/6) Brigadier General David McM. Gregg  | 
|
| 3rd Division | Brigadier General James H. Wilson | to Army of the Shenandoah 8/6 | 
Artillery Reserve | 
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| 4th Maine Independent Battery | from 6 Corps Artillery | |
| 1st New Jersey Artillery, Battery A | ||
| 3rd New York Independent Battery | ||
| 4th New York Heavy Artillery | to 1 Div. 2 Corps | |
| 15th New York Heavy Artillery, Co. F | Washington | |
| 2nd Maine Battery | from 9 Corps Artillery | |
| 3rd Maine Battery | from 9 Corps Artillery | |
| 14th Massachusetts Battery | from 9 Corps Artillery | |
| 1st Ohio Artillery, Battery H | from 6 Corps Artillery | |
| 1st Rhode Island Artillery, Battery E | from 6 Corps Artillery | |
| 3rd Vermont Battery | Captain Romeo H. Start | from 2 Corps Art. | 
| 5th United States Artillery, Battery E | from 6 Corps Artillery | |
