Cavalry
Alfred Pleasanton, Major General
| Divisions | Brigades |
| 1. John Buford | 1. William Gamble, Col. |
| Brigadier General | 2. Thomas C. Devin, Col. |
| 3. Wesley Merritt, Brig. Gen. | |
| 2. David McM. Gregg | 1. John B. McIntosh, Col. |
| Brigadier General | 2. Pennock Ruey, Col. |
| 3. J. Irvin Gregg, Col. | |
| 3. Judson Kilpatrick | 1. Elon J. Farnsworth, Brig. Gen. |
| Brigadier General | 2. George A. Custer, Brig. Gen. |
Chief of Artillery, Brigadier-General Henry J. Hunt
Number of guns belonging to the Artillery, 362
Number of guns at Gettysburg, 354
ORGANIZATION OF THE ARMY OF NORTHERN VIRGINIA
General Robert E. Lee
First Corps
James E. Longstreet, Lieutenant General
| Divisions | Brigades |
| 1. Lafayette McLaws | 1. John B. Kershaw, Brig. Gen. |
| Major General | 2. William Barksdale, Brig. Gen. |
| 3. Paul J. Semmes, Brig. Gen. | |
| 4. William T. Wofford, Brig. Gen. | |
| 2. George E. Pickett | 1. Richard B. Garnett, Brig. Gen. |
| Major General | 2. James L. Kemper, Brig. Gen. |
| 3. Lewis A. Armistead, Brig. Gen. | |
| 3. John B. Hood | 1. Evander Law, Brig. Gen. |
| Major General | 2. Jerome B. Robertson, Brig. Gen. |
| 3. George T. Anderson, Brig. Gen. | |
| 4. Henry L. Benning, Brig. Gen. |
Second Corps
Richard S. Ewell, Lieutenant General
| Divisions | Brigades |
| 1. Jubal A. Early | 1. Harry T. Hays, Brig. Gen. |
| Major General | 2. Robert F. Hoke (Isaac E. Avery), Brig. Gen. |
| 3. William Smith, Brig. Gen. | |
| 4. John B. Gordon, Brig. Gen. | |
| 2. Edward Johnson | 1. George H. Steuart, Brig. Gen. |
| Major General | 2. James A. Walker, Brig. Gen. |
| 3. Francis T. Nicholls (J. M. Williams), Brig. Gen. | |
| 4. John M. Jones, Brig. Gen. | |
| 3. Robert E. Rodes | 1. Junius Daniel, Brig. Gen. |
| Major General | 2. Alfred Iverson, Brig. Gen. |
| 3. George Doles, Brig. Gen. | |
| 4. Stephen D. Ramseur, Brig. Gen. | |
| 5. Edward A. O’Neil, Brig. Gen. |
Third Corps
Ambrose P. Hill, Lieutenant General
| Divisions | Brigades |
| 1. Richard H. Anderson | 1. Cadmus M. Wilcox, Brig. Gen. |
| Major General | 2. Ambrose R. Wright, Brig. Gen. |
| 3. William Mahone, Brig. Gen. | |
| 4. Edward A. Perry (David Lang), Brig. Gen. | |
| 5. Garnet Posey, Brig. Gen. | |
| 2. Henry Heth | 1. James J. Pettigrew, Brig. Gen. |
| Major General | 2. John M. Brockenbrough, Col. |
| 3. James J. Archer, Brig. Gen. | |
| 4. Joseph R. Davis, Brig. Gen. | |
| 3. William D. Pender | 1. James H. Lane, Brig. Gen. |
| Major General | 2. Edward L. Thomas, Brig. Gen. |
| 3. Alfred M. Scales, Brig. Gen. | |
| 4. Samuel McGowan (Abner Perrin), Brig. Gen. | |
| 4. James E. B. Stuart | 1. Wade Hampton, Brig. Gen. |
| Major General (Cavalry) | 2. Beverly H. Robertson, Brig. Gen. |
| 3. Fitzhugh Lee, Brig. Gen. | |
| 4. Wm. H. F. Lee (John R. Chambliss), Brig. Gen. | |
| 5. William E. Jones, Brig. Gen. | |
| Valley District and Department of Western Virginia (Cavalry and mounted Infantry). | |
| 1. Albert G. Jenkins, Brig. Gen. | |
| 2. John D. Imboden, Brig. Gen. | |