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)
22nd New York Infantry Regiment Colonel Walter Phelps (^ 9/14)
Lt. Colonel John McKie Jr.
24th New York Infantry Regiment Captain John D. O’Brien (w 9/17)
Major Robert Oliver (after 9/29)
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
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
95th New York Infantry Regiment Major Edward Pye
56th Pennsylvania Infantry Regiment Lt. Colonel John W. Hoffman (^ 9/14)
Captain Frederick Williams
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 
2nd Wisconsin Infantry Regiment Colonel Lucius Fairchild (w 9/14)
Major Rufus R. Dawes
6th Wisconsin Infantry Regiment Lt. Colonel Edward S. Bragg
7th Wisconsin Infantry Regiment Captain John B. Callis
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