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Commanded by Brigadier General Samuel P. Heintzelman

First Brigade Brig. Gen. Israel B. Richardson
2nd Michigan Infantry Regiment Colonel Orlando M. Poe
3rd Michigan Infantry Regiment Colonel Stephen Champlin
5th Michigan Infantry Regiment Colonel Henry D. Terry
37th New York Infantry Regiment Colonel Samuel B. Hayman
Second Brigade Brig. Gen. John Sedgwck
3rd Maine Infantry Regiment Colonel Henry G. Staples
4th Maine Infantry Regiment Colonel Hiram G. Berry
38th New York Infantry Regiment Colonel John H.H. Ward
40th New York Infantry Regiment Colonel Edward J. Riley
Third Brigade Brig. Gen. C. D. Jameson
57th Pennsylvania Infantry Regiment Col. William Maxwell (res. 2/27)
Lt. Colonel Charles T. Campbell
61st Pennsylvania Infantry Regiment Colonel Oliver H. Rippey to 4th Corps, 1 Div. 2 Brig.
63rd Pennsylvania Infantry Regiment Colonel Alexander Hays
99th Pennsylvania Infantry Regiment Lt. Colonel William Seymour (to 2/25)
Colonel Peter Fritz
to Military District of Washington
105th Pennsylvania Infantry Regiment Colonel Amor A. McKnight
Artillery and Cavalry
1st Rhode Island Artilery, Battery E
1st New Jersey Artillery, Battery B
2nd United States Artillery, Battery G
1st New Jersey Cavalry Regiment Colonel William Halstead (disch. 2/18)
Colonel Percy Wyndham
 to District Washington