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Commanded by Brigadier General Rufus King

First Brigade Brigadier General Christopher C. Augur (to 7/7)
Colonel Timothy Sullivan (7/7 – 7/27)
Brigadier General J. P. Hatch (after 7/28)
22nd New York Infantry Regiment Colonel Walter Phelps
24th New York Infantry Regiment Colonel Timothy Sullivan (except 7/7 – 7/27)
Lt. Colonel Samuel Beardsley (7/7 – 7/27)
30th New York Infantry Regiment Colonel Edward Frisby
14th New York State Militia Lt. Colonel Edward B. Fowler
Second Brigade Brigadier General Abner Doubleday
7th Indiana Infantry Regiment
76th New York Infantry Regiment Colonel William P. Wainwright
95th New York Infantry Regiment Colonel George H. Biddle
56th Pennsylvania Infantry Regiment Colonel Sullivan A. Meredith
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 Colonel George W. Pratt
Third Brigade Brigadier General John Gibbon
2nd Wisconsin Infantry Regiment Colonel Edgar O’Connor
6th Wisconsin Infantry Regiment Colonel Lysander Cutler
7th Wisconsin Infantry Regiment Colonel William W. Robinson
19th Indiana Infantry Regiment Colonel Solomon Meredith
Artillery
1st New Hampshire Battery Lieutenant Frederick M. Edgell
Pennsylvania Independent Battery D Captain George W. Durell
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