The following Union Army units[1] and commanders fought in the Battle of Seven Pines on May 31 and June 1, 1862. The Confederate order of battle is listed separately.
Abbreviations used [ ]
Military rank [ ]
Other [ ]
Army of the Potomac [ ]
MG George B. McClellan
Chief of Staff: Col Randolph B. Marcy
Division
Brigade
Regiments and Others
General Headquarters
Maj Granville O. Haller
Headquarter & Body Guards
Provost Guards
93rd New York (4 companies)
McClellan Dragoons (Illinois)
Chief of Engineers
BG John G. Barnard
Volunteer Engineer Brigade
BG Daniel P. Woodbury
15th New York Engineers
50th New York Engineers
II Corps [ ]
BG Edwin V. Sumner
Division
Brigade
Regiments and Others
First Division
BG Israel B. Richardson
1st Brigade
BG Oliver O. Howard (w )
Col Thomas J. Parker
5th New Hampshire : Col Edward E. Cross (w ), Ltc Samuel G. Langley
61st New York : Col Francis C. Barlow , Ltc William Massett (k )
64th New York : Ltc Daniel C. Bingham (w )
81st Pennsylvania : Col James Miller (k ), Ltc Charles F. Johnson
2nd Brigade
BG Thomas F. Meagher
3rd Brigade
BG William H. French
Artillery
Cpt George W. Hazzard
Cavalry
6th New York Cavalry (Co. D)
Second Division
BG John Sedgwick
1st Brigade
BG Willis A. Gorman
2nd Brigade
BG William W. Burns
69th Pennsylvania : Col Joshua T. Owen
71st Pennsylvania : Maj Charles W. Smith
72nd Pennsylvania : Col De Witt C. Baxter
106th Pennsylvania : Col Turner G. Morehead
3rd Brigade
BG Napoleon J.T. Dana
19th Massachusetts : Col Edward W. Hinks
20th Massachusetts : Col W. Raymond Lee
7th Michigan : Col Ira R. Grosvenor, Maj John H. Richardson
42nd New York : Col Edmund C. Charles
Artillery
Col Charles H. Tompkins
Battery A, 1st Rhode Island Light Artillery : Cpt John A. Tompkins
Battery B, 1st Rhode Island Light Artillery : Cpt Walter O. Bartlett
Battery G, 1st Rhode Island Light Artillery : Cpt Charles D. Owen
Battery I, 1st U.S. Artillery : Lt Edmund Kirby
Cavalry
6th New York Cavalry (Co. K): Cpt Riley Johnston
III Corps [ ]
BG Samuel P. Heintzelman [4]
Division
Brigade
Regiments and Others
Second Division
BG Joseph Hooker
1st Brigade
BG Cuvier Grover
1st Massachusetts : Maj Charles P. Chandler
11th Massachusetts : Ltc Porter D. Tripp
2nd New Hampshire : Col Gilman Marston
26th Pennsylvania : Maj Casper M. Berry
2nd Brigade
BG Daniel Sickles
70th New York : Maj Thomas Holt
71st New York : Col George B. Hall
72nd New York : Col Nelson Taylor
73rd New York : Maj John D. Moriarty, Cpt Charles B. Elliot
74th New York : Col Charles K. Graham
3rd Brigade
BG Francis E. Patterson [5]
Col Samuel H. Starr
5th New Jersey : Col Samuel H. Starr
6th New Jersey : Col Gershom Mott
7th New Jersey : Col Joseph W. Revere
8th New Jersey : Col Adolphus J. Johnson
Artillery
Maj Charles S. Wainwright
Battery D, 1st New York Light Artillery: Cpt Thomas W. Osborn
4th New York Independent Battery: Cpt James E. Smith
6th New York Independent Battery: Cpt Walter M. Bramhall
Battery H, 1st U.S. Artillery: Lt Charles R. Eakin
Third Division
BG Philip Kearny
1st Brigade
BG Charles D. Jameson (w )
87th New York : Col Stephen A. Dodge (w ), Ltc Richard A. Bachia
57th Pennsylvania : Col Charles T. Campbell (w ), Ltc E. W. Woods, Maj Jeremiah Culp (k )
63rd Pennsylvania : Col Alexander Hays , Ltc Algernon S. M. Morgan (w )
105th Pennsylvania : Col Amor A. McKnight (w )
2nd Brigade
BG David B. Birney [6]
Col J. H. Hobart Ward
3rd Maine : Col Henry G. Staples
4th Maine : Col Elijah Walker
38th New York: Col J. H. Hobart Ward
40th New York : Col Edward J. Riley (w ), Ltc Thomas W. Egan
3rd Brigade
BG Hiram G. Berry
2nd Michigan : Col Orlando M. Poe , Ltc Adolphus Williams (w )
3rd Michigan : Col Stephen G. Champlin (w )
5th Michigan : Col Henry D. Terry
37th New York : Col Samuel B. Hayman
Artillery
Cpt James Thompson
Cavalry
IV Corps [ ]
BG Erasmus D. Keyes
Division
Brigade
Regiments and Others
First Division
BG Darius N. Couch
1st Brigade
BG John J. Peck
55th New York : Ltc Louis Thourot
62nd New York : Col J. Lafayette Riker (k ), Ltc David J. Nevin
93rd Pennsylvania : Col J. M. McCarter (w ), Cpt John E. Arthur
102nd Pennsylvania : Col Thomas A. Rowley (w ), Ltc J. M. Kinkead
2nd Brigade
BG John J. Abercrombie
3rd Brigade
BG Charles Devens (w )
Col Charles H. Innes
Artillery
Maj Robert M. West
Cavalry
6th New York Cavalry (Co. F)
Third Division
BG Silas Casey
1st Brigade
BG Henry M. Naglee
2nd Brigade
BG Henry W. Wessells
96th New York : Col James Fairman
85th Pennsylvania : Col Joshua B. Howell
101st Pennsylvania: Ltc David B. Morris (w )
103rd Pennsylvania: Maj A. W. Gazzam
3rd Brigade
BG Innis N. Palmer
81st New York : Ltc Jacob J. DeForest (w ), Cpt W. C. Raulston
85th New York : Col Jonathan S. Belknap
92nd New York : Col Lewis C. Hunt (w ), Ltc Hiram Anderson Jr.
98th New York : Ltc Charles Durkee
Artillery
Col Guilford D. Bailey (k )
Maj D. H. Van Valkenburgh (k )
Cpt Peter C. Regan
Battery A, 1st New York Light Artillery: Lt George P. Hart
Battery H, 1st New York Light Artillery: Cpt Joseph Spratt (w ), Lt Charles E. Mink
7th New York Independent Battery: Cpt Peter C. Regan
8th New York Independent Battery: Cpt Butler Fitch
Cavalry
6th New York Cavalry (Co. B):
Cavalry
V Corps [ ]
BG Fitz John Porter
Division
Brigade
Regiments and Others
First Division
BG George W. Morell
1st Brigade
BG John H. Martindale
2nd Maine
18th Massachusetts
22nd Massachusetts
13th New York
25th New York
2nd Company, Massachusetts Sharpshooters:[7]
2nd Brigade
Col James McQuade
3rd Brigade
BG Daniel Butterfield
Artillery
Cpt Charles Griffin
Battery C, Massachusetts Light Artillery
Battery E, Massachusetts Light Artillery
Battery C, 1st Rhode Island Light Artillery
Battery D, 5th U.S. Artillery
Sharpshooters
Second Division
BG George Sykes
1st Brigade
Col Robert C. Buchanan
2nd Brigade
Ltc William Chapman
3rd Brigade
Col Gouverneur K. Warren
Artillery Reserve
Col Henry J. Hunt
1st Brigade
Ltc William Hays
Battery M, 2nd U.S. Artillery: Captain Henry Benson
Battery C–G, 3rd U.S. Artillery
2nd Brigade
Ltc George W. Getty
Battery E, 1st U.S. Artillery : Lt Alanson Merwin Randol
Battery G & K , 1st U.S. Artillery
Battery G, 4th U.S. Artillery
Battery A, 5th U.S. Artillery
Battery K, 5th U.S. Artillery
3rd Brigade
Maj Albert Arndt
Battery A, 1st New York Artillery Battalion
Battery B, 1st New York Artillery Battalion
Battery C, 1st New York Artillery Battalion
Battery D, 1st New York Artillery Battalion
4th Brigade
Cpt J. Howard Carlisle
Battery E, 2nd U.S. Artillery
Battery F–K, 3rd U.S. Artillery
Battery K, 4th U.S. Artillery
VI Corps [ ]
BG William B. Franklin
Reserves [ ]
Division
Brigade
Regiments and Others
Cavalry Reserve
BG Philip St. George Cooke
1st Brigade
BG William H. Emory
5th U.S. Cavalry
6th U.S. Cavalry
6th Pennsylvania Cavalry
2nd Brigade
Col George A.H. Blake
1st U.S. Cavalry
8th Pennsylvania Cavalry
Advance Guard
BG George Stoneman
White House Command
Ltc Rufus Ingalls
93rd New York (6 companies)
11th Pennsylvania Cavalry (5 companies)
Battery F, 1st New York Light Artillery
Notes [ ]
^ Multiple commander names indicate command succession of command during the battle or the campaign.
^ Attached to 15th Massachusetts
^ Attached to 1st Minnesota
^ Kearny's artillery, the 3rd Pennsylvania Cavalry, the 6th and 7th New Jersey regiments, and Poe's brigade were guarding the bridges at White Oak Swamp and not engaged.
^ Turned over command to Col. Starr on June 1 due to illness.
^ Under arrest May 31, brigade commanded by Col. Ward during the battle.
^ Attached to 22nd Massachusetts
^ Attached to 16th Michigan
Sources [ ]