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Commanded by Brigadier General George W. Morrell

First Brigade Colonel James Barnes
2nd Maine Infantry Regiment Colonel Charles W. Roberts
20th Maine Infantry Regiment Colonel Adelbert Ames from Dept. of Washington
18th Massachusetts Infantry Regiment Lt. Colonel Joseph Hayes
22nd Massachusetts Infantry Regiment Lt. Colonel William S. Tilton
32nd Massachusetts Infantry Regiment Colonel Francis J. Parker to 2 Brig. (below)
1st Michigan Infantry Regiment Captain E. W. Belton
13th New York Infantry Regiment Colonel Elisha G. Marshall
25th New York Infantry Regiment Colonel Charles A. Johnson
118th Pennsylvania Infantry Regiment Colonel Charles M. Prevost (w 9/19)
Lt. Colonel James Gwyn
from Dept. Washington
Second Brigade Brig. Gen. Charles Griffin
9th Massachusetts Infantry Regiment Colonel Patrick R. Guiney
32nd Massachusetts Infantry Regiment Colonel Francis J. Parker from 1 Brig. (above)
4th Michigan Infantry Regiment Colonel Jonathan W. Childs
14th New York Infantry Regiment Colonel James McQuade
62nd Pennsylvania Infantry Regiment Colonel Jacob B. Sweitzer
Third Brigade Colonel H. S. Lansing (to 9/18)
Colonel Thomas B. W. Stockton
16th Michigan Infantry Regiment Lt. Colonel Norval E. Welch
12th New York Infantry Regiment Captain William Huson
17th New York Infantry Regiment Lt. Colonel Nelson B. Bartram
44th New York Infantry Regiment Colonel James O. Rice
83rd Pennsylvania Infantry Regiment Captain Orpheus S. N. Woodward
Sharpshooters
1st United States Sharpshooters Captain John B. Isler
Artillery
3rd Massachusetts Battery Captain Augustus P. Martin
5th Massachusetts Battery
1st Rhode Island Artillery, Battery C Captain Richard Waterman
5th United States Artillery, Battery D Lieutenant Charles E. Hazlett