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Commanded by Major General Joseph Hooker
| Headquarters | ||
| First Corps | Major General John F. Reynolds | |
| 1st Division | Brigadier General John S. Wadsworth (to 2/27) Brigadier General Solomon Meredith |
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| 2nd Division | Brigadier General John C. Robinson | |
| 3rd Division | Major General Abner Doubleday (to 2/3) Colonel R. P. Cummings (to 2/5) Major General Abner Doubleday |
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| Second Corps | Major General Oliver O. Howard (to 2/5) Major General Darius N. Couch |
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| 1st Division | Brigadier General Samuel K. Zook (to 2/20) Major General Winfield S. Hancock |
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| 2nd Division | Brigadier General Joshua T. Owen (to 2/7) Major General Oliver O. Howard |
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| 3rd Division | Major General William H. French | |
| Third Corps | Major General Daniel Sickles |
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| 1st Division | Brigadier General David Birney | |
| 2nd Division | Brigadier General J. B. Carr (to 2/8) Brigadier General Hiram Berry |
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| 3rd Division | Brigadier General Amiel W. Whipple | |
| Fifth Corps | Brigadier General Charles Griffin (2/1) Major General George Sykes (to 2/5) Major General George Meade (to 2/16 ) Major General George Sykes (to 2/23) Major General Andrew A. Humphreys (to 2/28) Major General George Meade |
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| 1st Division | Colonel James Barnes (2/1) Brigadier General Charles Griffin |
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| 2nd Division | Major General George Sykes | |
| 3rd Division | Colonel E. M. Gregory (to 2/12) Brigadier General Andrew A. Humphreys |
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| Sixth Corps | Major General William F. Smith (to 2/24) Major General John Sedgwick |
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| 1st Division | Brigadier General W. T. H. Brooks | |
| 2nd Division | Brigadier General Albion P. Howe | |
| 3rd Division | Brigadier General Charles Devens Jr. Brigadier General John Newton |
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| Ninth Corps | Major General John Sedgwick (to 2/24) Major General William F. Smith |
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| 1st Division | Brigadier General William W. Burns (to 2/27) Brigadier General Orlando B. Wilcox |
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| 2nd Division | Brigadier General Samuel D. Sturgis (to 2/27) Brigadier General Edward Ferrero |
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| 3rd Division | Brigadier General George W. Getty | |
| Eleventh Corps | Brigadier General Carl Schurz (to 2/5) Major General Franz Sigel (2/5-2/22) Brigadier General Adolph Von Steinwehr |
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| 1st Division | Brigadier General Nathaniel C. McLean (to 2/5) Brigadier General Julius H. Stahel |
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| 2nd Division | Brigadier General Adolph Von Steinwehr (to 2/22) Colonel Adolph Bushbeck |
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| 3rd Division | Brigadier General Alexander Schimmelfenning (to 2/20) Brigadier General Carl Schurz |
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| Twelfth Corps |
Major General Henry W. Slocum |
|
| 1st Division | Brigadier General Alpheus Williams | |
| 2nd Division | Brigadier General John W. Geary | |
| Cavalry Corps | Major General George Stoneman | expanded from Div. 2/22 |
| 1st Division | Brigadier General Alfred Pleasonton |
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| 2nd Division | Brigadier General William W. Averill | |
| 3rd Division | Brigadier General David McM. Gregg | |