< to September • October 1862 • to November >
Commanded by Major General George B. McClellan
| Headquarters & Staff | ||
| First Corps | Brig. Gen. John F. Reynolds | |
| 1st Division | Brig. Gen. Abner Doubleday | |
| 2nd Division | Brig. Gen. N. Taylor | |
| 3rd Division | Brig. Gen. George Meade | |
| Second Corps | Major General Edwin V. Sumner (to 10/7) Major General Darius N. Couch |
|
| 1st Division | Brig. Gen. Winfield S. Hancock | |
| 2nd Division | Brig. Gen. Oliver O. Howard | |
| 3rd Division | Brig. Gen. William H. French | |
| Third Corps | Major General Samuel P. Heintzelman (to 10/30) Brigadier General George Stoneman |
|
| 1st Division | Brig. Gen. George Stoneman (^ 10/20) Brig. Gen. David Birney |
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| 2nd Division | Brig. Gen. Daniel Sickles | |
| Fifth Corps | Major General Fitz John Porter | |
| 1st Division | Brig. Gen. George W. Morrell (to 10/30) Brig. Gen. Charles Griffin |
|
| 2nd Division | Brig. Gen. George Sykes | |
| 3rd Division | Brig. Gen. Andrew A. Humphreys | |
| Sixth Corps | Major General William B. Franklin | |
| 1st Division | Brig. Gen. Hennry W. Slocum (to 10/15) Brig. Gen.John Newton (10/15 – 10/18) Brig. Gen.W. T. H. Brooks |
|
| 2nd Division | Brig. Gen. William F. Smith | |
| 3rd Division | Brig. Gen. Darius N. Couch (to 10/18) Brig. Gen. John Newton |
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| Ninth Corps | Brigadier General Jacob D. Cox (to 10/18) Brigadier General Orlando D. Wilcox |
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| 1st Division | Brig. Gen. Orlando Wilcox (^ 10/18) Colonel William F. Fenton (10/18 – 10/24) Colonel Daniel Leasure |
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| 2nd Division | Brig. Gen. Samuel D. Sturgis | |
| 3rd Division | Major Gen. John G. Parke Brig. Gen. George W. Getty |
|
| Kanawha Division | Colonel Eliakim Scammon | returned to West Virginia |
| Eleventh Corps | Major General Franz Sigel | |
| 1st Division | Bde. Gen. Julius H. Stahel | |
| 2nd Division | Bde. Gen. Adolph Von Steinwehr | |
| 3rd Division | Brig. Gen. Carl Schurz | |
| Twelfth Corps |
Brigadier General Alpheus S. Williams (to 10/20) Major General Henry W. Slocum |
|
| 1st Division | Brig. Gen. George Gordon (to 10/20) Brig. Gen. Alpheus Williams |
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| 2nd Division | Brig. Gen. George Greene (to 10/15) Brig. Gen. John W. Geary |
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| Cavalry Division | Brigadier General Alfred Pleasonton | |
| 1st Brigade | Major C. Whiting | |
| 2nd Brigade | Colonel John F. Farnsworth | |
| 3rd Brigade | Colonel Richard H. Rush | |
| 4th Brigade | Colonel A. T. McReynolds | to Defences Upper Potomac |
| 5th Brigade | Colonel Benjamin F. Davis | |
| Bayard’s Brigade | Brig. Gen. George D. Bayard | |