United States Army > Army of the Potomac > 1st Corps
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Commanded by Brigadier General Rufus King
Formerly known as McDowell’s Division. On March 3, 1862 General McDowell was given command of the newly created 1st Corps. The division was assigned to the corps as the 3rd Division under the command of its senior brigadier general, Rufus King.
| First Brigade | Brigadier General Christopher C. Augur | |
| 22nd New York Infantry Regiment | Colonel Walter Phelps | |
| 24th New York Infantry Regiment | Colonel Timothy Sullivan | |
| 30th New York Infantry Regiment | Colonel Edward Frisby | |
| 14th New York State Militia | Colonel Alfred M. Wood | |
| Second Brigade | Brigadier General J. S. Wadsworth (to 3/17) Brigadier General Marsena Patrick |
|
| 12th New York Infantry Regiment | Colonel Henry Weeks | to 3 Brig., 1 Div., 3rd Corps 3/13 |
| 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 | Colonel George W. Pratt | |
| Third Brigade | Colonel Lysander Cutler | |
| 2nd Wisconsin Infantry Regiment | Colonel Edgar O’Connor | |
| 6th Wisconsin Infantry Regiment | ||
| 7th Wisconsin Infantry Regiment | Colonel William W. Robinson | |
| 19th Indiana Infantry Regiment | Colonel Solomon Meredith | |
| Artillery and Cavalry | ||
| 1st New Hampshire Artillery, Battery D | ||
| 4th United States Artillery, Battery B | ||
| 2nd New York Cavalry Regiment | Colonel Judson Kilpatrick | |