United States Army > Army of the Potomac > 1st Corps
September 1862 • to October >
Commanded by
Brigadier General Rufus King (September 12 – 14)
Brigadier General J. P. Hatch (wounded September 14)
Brigadier General Abner Doubleday
Transferred to the Army of the Potomac from the First Division, Third Corps, Army of Virginia on September 12, 1862
| First Brigade | Brigadier General J. P. Hatch (9/12 – 9/14) Colonel Walter Phelps, Jr. (after 9/14) |
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| 22nd New York Infantry Regiment | Colonel Walter Phelps (^ 9/14) Lt. Colonel John McKie Jr. |
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| 24th New York Infantry Regiment | Captain John D. O’Brien (w 9/17) Major Robert Oliver (after 9/29) |
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| 30th New York Infantry Regiment | Colonel William M. Searing | |
| 14th New York State Militia | Major William H. de Bevoise | |
| 2nd United States Sharpshooters | Colonel Henry Post (w 9/17) | |
| Second Brigade | Brigadier General Abner Doubleday (^ 9/14) Colonel W. P. Wainwright (w 9/14) Lt. Colonel J. W. Hoffman |
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| 7th Indiana Infantry Regiment | Major Ira G. Grover | |
| 76th New York Infantry Regiment | Colonel William P. Wainwright (^ 9/14) Lieutenant Chauncey Crandell (9/14) Captain John W. Young |
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| 95th New York Infantry Regiment | Major Edward Pye | |
| 56th Pennsylvania Infantry Regiment | Lt. Colonel John W. Hoffman (^ 9/14) Captain Frederick Williams |
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| Second Brigade | Brigadier General Marsena Patrick | |
| 21st New York Infantry Regiment | Colonel William F. Rogers | |
| 23rd New York Infantry Regiment | Colonel Henry C. Hoffman | |
| 35th New York Infantry Regiment | Colonel Newton B. Lord | |
| 80th New York Infantry Regiment | Lt. Colonel Theodore B. Gates | |
| Third Brigade | Brigadier General John Gibbon | |
| 19th Indiana Infantry Regiment | Colonel Solomon Meredith (to 9/16) Lt. Colonel Alois O. Bachmann (k 9/17) Captain William W. Dudley |
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| 2nd Wisconsin Infantry Regiment | Colonel Lucius Fairchild (w 9/14) Major Rufus R. Dawes |
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| 6th Wisconsin Infantry Regiment | Lt. Colonel Edward S. Bragg | |
| 7th Wisconsin Infantry Regiment | Captain John B. Callis | |
| Artillery | ||
| 1st New Hampshire Battery | Lieutenant Frederick M. Edgell | |
| Battery D, 1st Rhode Island Artillery | Captain John Albert Monroe | |
| Battery L, 1st New York Artillery | Captain John A. Reynolds | |
| 4th United States Artillery, Battery B | Captain Joseph Campbell (w 9/17) Lieutenant James Stewart |
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