# Seven Days Battles order of battle: Union

The following Union Army units and commanders fought in the Seven Days Battles (from June 25 to July 1, 1862) of the American Civil War. Order of battle compiled from the army organization-return of casualties during the battle and the reports. The Confederate order of battle is listed separately.

## Abbreviations used
### Military rank

* MG = Major General
* BG = Brigadier General
* Col = Colonel
* Ltc = Lieutenant Colonel
* Maj = Major
* Cpt = Captain
* Lt = Lieutenant
* Sgt = Sergeant

### Other

* w = wounded
* mw = mortally wounded
* k = killed
* c = captured

## Army of the Potomac

MG George B. McClellan, Commanding

### General Staff and Headquarters

General Staff
* Chief of Staff: BG Randolph B. Marcy
* Chief of Artillery: BG William F. Barry
* Assistant Adjutant General: BG Seth Williams
* Chief Quartermaster: BG Stewart L. Van Vliet
General Headquarters
* Escort
** Oneida (New York) Cavalry: Cpt James B. McIntyre
** 4th United States Cavalry (Companies A & E): Cpt James B. McIntyre
* Provost Marshal General: BG Andrew Porter
** McClellan Dragoons: Maj Alfred Pleasonton
** Sturges' Rifles: Maj Granville O. Haller
** 93rd New York (Companies A, F, H, & K): Maj Granville O. Haller
** 2nd United States Cavalry: Maj Alfred Pleasonton
** 8th United States (Companies F & G): Cpt Royal T. Frank; Lt Eugene Carter
* United States Engineers
** Battalion United States Engineers: Cpt James C. Duane
* Engineer Brigade: BG Daniel P. Woodbury
** 15th New York Engineers: Col John McLeod Murphy
** 50th New York Engineers: Col Charles B. Stuart

### II Corps

BG Edwin V. Sumner
| Division | Brigade | Regiments and Others |
| First Division   BG Israel B. Richardson | 1st Brigade   BG John C. Caldwell | 5th New Hampshire: Ltc Samuel G. Langley; Cpt Edward E. Sturtevant 7th New York: Col George W. von Schack 61st New York: Col Francis Channing Barlow 81st Pennsylvania: Col Charles F. Johnson (w - Glendale); Ltc Eli T. Conner (k - Malvern Hill); Maj H. Boyd McKeen |
| First Division   BG Israel B. Richardson | 2nd Brigade   BG Thomas F. Meagher   Col Robert Nugent   BG Thomas F. Meagher | 29th Massachusetts: Col Ebenezer W. Pierce (w - White Oak Swamp); Ltc Joseph H. Barnes 63rd New York: Col John Burke (w); Ltc Henry Fowler; Cpt Joseph O'Neill 69th New York: Col Robert Nugent 88th New York: Col Henry M. Baker; Maj James Quinlan |
| First Division   BG Israel B. Richardson | 3rd Brigade   BG William H. French | 2nd Delaware: Ltc William P. Bailey; Cpt David L. Stricker 52nd New York: Col Paul Frank 57th New York: Col Samuel K. Zook 64th New York: Col Thomas J. Parker 66th New York: Col Joseph C. Pinckney 53rd Pennsylvania: Col John R. Brooke |
| First Division   BG Israel B. Richardson | Artillery   Cpt George W. Hazzard (mw - White Oak Swamp) | Battery B, 1st New York Light Artillery: Cpt Rufus D. Pettit Battery A & Battery C, 4th U.S. Artillery: Cpt George W. Hazzard ('mw June 30), Lt Rufus King, Jr. |
| Second Division   BG John Sedgwick (w - Glendale) | 1st Brigade   Col Alfred Sully | 15th Massachusetts: Ltc John W. Kimball 1st Minnesota: Col Stephen Miller 34th New York Volunteer Infantry Regiment: Col James A. Suiter 82nd New York Volunteer Infantry Regiment (Also known as the 2nd Militia); Col Henry W. Hudson 1st Company, Massachusetts Sharpshooters: Cpt John Saunders 2nd Company, Minnesota Sharpshooters: Cpt William F. Russell |
| Second Division   BG John Sedgwick (w - Glendale) | 2nd Brigade   BG William W. Burns | 69th Pennsylvania: Col Joshua T. Owen 71st Pennsylvania: Ltc William G. Jones 72nd Pennsylvania: Col De Witt C. Baxter 106th Pennsylvania: Col Turner G. Morehead |
| Second Division   BG John Sedgwick (w - Glendale) | 3rd Brigade   BG Napoleon J.T. Dana | 19th Massachusetts: Col Edward W. Hinks (w - Glendale); Cpt Edmund Rice; Ltc Arthur F. Devereux 20th Massachusetts: Col William Raymond Lee 7th Michigan: Col Ira R. Grosvenor 42nd New York: Col Edmund C. Charles (w&c); Ltc James J. Mooney |
| Second Division   BG John Sedgwick (w - Glendale) | Artillery   Col Charles H. Tompkins | 1st Rhode Island Light, Battery A: Cpt John A. Thompkins Battery I, 1st U.S. Artillery: Lt Edmund Kirby |
| | Artillery Reserve | Battery G, 1st New York Light Artillery: Cpt John D. Frank 1st Rhode Island Light, Battery B: Cpt Walter O. Bartlett 1st Rhode Island Light, Battery G: Cpt Charles D. Owen |
| | Cavalry | 6th New York Cavalry (Companies D, F, H and K): : Ltc Duncan McVicar |

### III Corps

BG Samuel P. Heintzelman (w - Glendale)
| Division | Brigade | Regiments and Others |
| Second Division   BG Joseph Hooker | 1st Brigade   BG Cuvier Grover | 1st Massachusetts: Col Robert Cowdin 11th Massachusetts: Col William E. Blaisdell 16th Massachusetts: Col Powell T. Wyman (k - Glendale); Ltc George A. Meacham (w); Maj Daniel S. Lamson 2nd New Hampshire: Col Gilman Marston 26th Pennsylvania: Ltc George D. Wells |
| Second Division   BG Joseph Hooker | 2nd Brigade   BG Daniel Sickles | 70th New York Infantry Regiment: Maj Thomas Holt 71st New York Infantry Regiment: Col George B. Hall 72nd New York Infantry Regiment: Col Nelson Taylor 73rd New York Infantry Regiment: Cpt Alfred A. Donalds 74th New York Infantry Regiment: Col Charles K. Graham |
| Second Division   BG Joseph Hooker | 3rd Brigade   Col Joseph B. Carr | 5th New Jersey: Maj John Ramsey 6th New Jersey: Col Gershom Mott 7th New Jersey: Col Joseph W. Revere; Cpt Henry C. Bartlett 8th New Jersey: Maj William A. Henry 2nd New York: Ltc William A. Olmsted |
| Second Division   BG Joseph Hooker | Artillery | Battery D, 1st New York Light Artillery: Cpt Thomas W. Osborn 4th New York Light Artillery: Lt Joseph E. Nairn Battery H, 1st U.S. Artillery: Cpt Charles H. Webber |
| Third Division   BG Philip Kearny | 1st Brigade   BG John C. Robinson | 20th Indiana: Col William L. Brown 87th New York: Ltc Richard A. Bachia 57th Pennsylvania: Ltc Elhanon W. Woods 63rd Pennsylvania: Col Alexander Hays 105th Pennsylvania: Col Amor A. McKnight, Ltc William W. Corbet, Cpt Calvin A. Craig |
| Third Division   BG Philip Kearny | 2nd Brigade   BG David B. Birney | 3rd Maine: Ltc C. A. L. Sampson, Maj Edwin Burt 4th Maine: Col Elijah Walker 38th New York: Col J. H. Hobart Ward 40th New York: Ltc Thomas W. Egan 101st New York: Col Enrico Fardella |
| Third Division   BG Philip Kearny | 3rd Brigade   BG Hiram G. Berry | 2nd Michigan: Maj Louis Dillman, Cpt William Humphrey 3rd Michigan: Ltc Ambrose A. Stevens, Maj Byron R. Pierce 5th Michigan: Maj John D. Fairbanks (mw - Glendale), Cpt Judson S. Farrer 1st New York: Col Garrett Dyckman 37th New York: Col Samuel B. Hayman |
| Third Division   BG Philip Kearny | Artillery | 1st Rhode Island Light, Battery E: Cpt George E. Randolph Battery G, 2nd U.S. Artillery: Cpt James Thompson |
| | Artillery Reserve   Cpt Gustavus A. De Russy | 6th New York Light Artillery: Cpt Walter M. Bramhall New Jersey Light, 2nd Battery: Cpt John E. Beam (k - Malvern Hill), Lt John B. Monroe Battery K, 4th U.S. Artillery: Lt Francis W. Seeley |
| | Cavalry   Col William W. Averell | 3rd Pennsylvania Cavalry: Col William W. Averell |

### IV Corps

BG Erasmus D. Keyes
| Division | Brigade | Regiments and Others |
| First Division   BG Darius N. Couch | 1st Brigade   BG Albion P. Howe | 55th New York: Ltc Louis Thourot 62nd New York: Col David J. Nevin 93rd Pennsylvania: Cpt John S. Long 98th Pennsylvania: Col John F. Ballier 102nd Pennsylvania: Col Thomas Algeo Rowley |
| First Division   BG Darius N. Couch | 2nd Brigade   BG John J. Abercrombie | 65th New York: Ltc Alexander Shaler 67th New York: Ltc Nelson Cross 23rd Pennsylvania: Col Thomas H. Neill (w - Malvern Hill) 31st Pennsylvania: Col David H. Williams 61st Pennsylvania: Ltc Frank Vallee |
| First Division   BG Darius N. Couch | 3rd Brigade   BG Innis N. Palmer | 7th Massachusetts: Col David A. Russell 10th Massachusetts: Maj Ozro Miller (mw - Malvern Hill); Cpt Frederick Barton 36th New York: Maj James A. Raney 2nd Rhode Island: Col Frank Wheaton |
| First Division   BG Darius N. Couch | Artillery | Battery C, 1st Pennsylvania Light Artillery: Cpt Jeremiah McCarthy Battery D, 1st Pennsylvania Light Artillery: Cpt Edward H. Flood |
| Second Division   BG John J. Peck | 1st Brigade   BG Henry M. Naglee | 11th Maine: Col Harris M. Plaisted 56th New York: Col Charles H. Van Wyck 100th New York: Ltc Phineas Staunton 52nd Pennsylvania: Ltc Henry M. Hoyt 104th Pennsylvania: Ltc John W. Nields |
| Second Division   BG John J. Peck | 2nd Brigade   BG Henry W. Wessells | 81st New York: Col Edwin Rose 85th New York: Col Jonathan S. Belknap 92nd New York: Ltc Hiram Anderson, Jr. 96th New York: Col James Fairman 98th New York: Ltc Charles Durkee 85th Pennsylvania: Col Joshua B. Howell 101st Pennsylvania: Cpt Charles W. May 103rd Pennsylvania: Col Theodore F. Lehmann |
| Second Division   BG John J. Peck | Artillery | Battery H, 1st New York Light Artillery: Lt Charles E. Mink 7th New York Artillery: Cpt Peter C. Regan |
| | Artillery Reserve   Maj Robert M. West | 8th New York Light Artillery: Cpt Butler Fitch Battery E, 1st Pennsylvania Artillery: Cpt Theodore Miller Battery H, 1st Pennsylvania Artillery: Cpt James Brady Battery M, 5th U.S. Artillery: Cpt James McKnight |
| | Cavalry   Col David M. Gregg | 8th Pennsylvania Cavalry: Col David M. Gregg |

### V Corps

BG Fitz J. Porter
| Division | Brigade | Regiments and Others |
| First Division   BG George W. Morell | 1st Brigade   BG John H. Martindale | 2nd Maine: Col Charles W. Roberts 18th Massachusetts: Col James Barnes 22nd Massachusetts: Col Jesse A. Gove (k - Gaines' Mill), Maj William S. Tilton (w&c - Gaines' Mill), Cpt Walter S. Sampson, Cpt D. K. Wardwell 1st Michigan: Col Horace S. Roberts 13th New York: Col Elisha G. Marshall, Maj Francis A. Schoeffel 25th New York: Maj Edwin S. Gilbert (c), Cpt Shepard Gleason 2nd Company, Massachusetts Sharpshooters: Lt Charles D. Stiles |
| First Division   BG George W. Morell | 2nd Brigade   BG Charles Griffin | 9th Massachusetts: Col Thomas Cass (mw - Malvern Hill); Ltc Patrick R. Guiney 4th Michigan: Col Dwight A. Woodbury (k - Malvern Hill), Ltc Jonathan W. Childs (w), Cpt John M. Randolph 14th New York: Col James McQuade 62nd Pennsylvania: Col Samuel W. Black (k - Gaines' Mill); Ltc Jacob B. Sweitzer (w&c - Gaines' Mill), Cpt James Hull |
| First Division   BG George W. Morell | 3rd Brigade   BG Daniel Butterfield | 12th New York: Ltc Robert M. Richardson 17th New York: Col Henry S. Lansing 44th New York: Ltc James C. Rice 16th Michigan: Col T.B.W. Stockton (c - Gaines' Mill), Ltc John V. Ruele 83rd Pennsylvania: Col John W. McLane (k), Cpt Hugh S. Campbell (w) Brady's Company Michigan Sharpshooters: Cpt Kin S. Dygert |
| First Division   BG George W. Morell | Artillery   Cpt William B. Weeden | 3rd Massachusetts Light Artillery: Cpt Augustus Pearl Martin 5th Massachusetts Light Artillery: Lt John B. Hyde 1st Rhode Island Light, Battery C: Lt Richard Waterman Battery D, 5th U.S. Artillery: Lt Henry W. Kingsbury |
| First Division   BG George W. Morell | Sharpshooters   Col Hiram Berdan | 1st U.S. Sharpshooter Regiment: Col Hiram Berdan |
| Second Division   BG George Sykes | 1st Brigade   Ltc Robert C. Buchanan | 3rd United States: Maj Nathan B. Rossell (k - Gaines' Mill), Cpt Thomas W. Walker, Cpt John D. Wilkins 4th United States: Maj Delozier Davidson (c), Cpt Joseph B. Collins 12th United States: Maj Henry B. Clitz (w&c - Gaines' Mill); Cpt John G. Read, Cpt Matthew M. Blunt 14th United States: Cpt John D. O'Connell |
| Second Division   BG George Sykes | 2nd Brigade   Ltc William Chapman   Maj Charles S. Lovell | 2nd United States: Cpt Adolphus F. Bond, Lt John S. Poland 6th United States: Cpt Thomas Hendrickson 10th United States: Maj Charles S. Lovell; Maj George L. Andrews 11th United States: Maj DeLancey Floyd-Jones 17th United States: Maj George L. Andrews |
| Second Division   BG George Sykes | 3rd Brigade   Col Gouverneur K. Warren (w - Gaines' Mill) | 5th New York: Ltc Hiram Duryee 10th New York: Col John E. Bendix |
| Second Division   BG George Sykes | Artillery   Cpt Stephen H. Weed | Battery L and M, 3rd U.S. Artillery: Cpt John Edwards Battery I, 5th U.S. Artillery: Cpt Stephen H. Weed |
| Third Division (Pennsylvania Reserves)   BG George A. McCall (c - Frayser's Farm)   BG Truman Seymour | 1st Brigade   BG John F. Reynolds (c - Gaines' Mill)   Col Seneca G. Simmons (k - Glendale)   Col Richard Biddle Roberts | 1st Pennsylvania Reserves: Col Richard Biddle Roberts, Maj Lemuel Todd 2nd Pennsylvania Reserves: Ltc William McCandless 5th Pennsylvania Reserves: Col Seneca G. Simmons; Ltc Joseph W. Fisher 8th Pennsylvania Reserves: Col George S. Hays 13th Pennsylvania Reserves (Companies A, B, D, E, F, & K): Maj Roy Stone |
| Third Division (Pennsylvania Reserves)   BG George A. McCall (c - Frayser's Farm)   BG Truman Seymour | 2nd Brigade   BG George G. Meade (w - Glendale)   Col Albert L. Magilton | 3rd Pennsylvania Reserves: Col Horatio G. Sickel 4th Pennsylvania Reserves: Col Albert L. Magilton 7th Pennsylvania Reserves: Col Elisha B. Harvey 11th Pennsylvania Reserves: Col Thomas F. Gallagher (c - Gaines' Mill), Cpt Daniel S. Porter |
| Third Division (Pennsylvania Reserves)   BG George A. McCall (c - Frayser's Farm)   BG Truman Seymour | 3rd Brigade   BG Truman Seymour   Col Conrad Feger Jackson | 6th Pennsylvania Reserves: -- 9th Pennsylvania Reserves: Col Conrad Feger Jackson, Cpt John Cuthbertson (w) 10th Pennsylvania Reserves: Col James T. Kirk 12th Pennsylvania Reserves: Col John H. Taggart |
| Third Division (Pennsylvania Reserves)   BG George A. McCall (c - Frayser's Farm)   BG Truman Seymour | Artillery   Cpt Henry V. De Hart (mw - Gaines' Mill) | Battery A, 1st Pennsylvania Artillery: Cpt Hezekiah Easton (k - Gaines' Mill), Lt Jacob L. Detrich, Lt John G. Simpson Battery B, 1st Pennsylvania Artillery: Cpt James H. Cooper Battery G, 1st Pennsylvania Artillery: Cpt Mark Kerns (w), Lt Frank P. Amsden Battery C, 5th U.S. Artillery: Cpt Henry V. De Hart (mw), Lt Eben G. Scott |
| Third Division (Pennsylvania Reserves)   BG George A. McCall (c - Frayser's Farm)   BG Truman Seymour | Cavalry   Col James H. Childs | 4th Pennsylvania Cavalry: Col James H. Childs |
| | Cavalry   Col John F. Farnsworth | 8th Illinois Cavalry: Col John F. Farnsworth |

### VI Corps

BG William B. Franklin
| Division | Brigade | Regiments and Others |
| First Division   BG Henry W. Slocum | 1st Brigade   BG George W. Taylor | 1st New Jersey: Ltc Robert McAllister, Col A.T.A. Torbert 2nd New Jersey: Col Isaac M. Tucker (k - Gaines' Mill), Maj Henry O. Ryerson (w - Gaines' Mill), Ltc Samuel L. Buck 3rd New Jersey: Col Henry W. Brown 4th New Jersey: Col James H. Simpson (c - Gaines' Mill), Ltc William B. Hatch |
| First Division   BG Henry W. Slocum | 2nd Brigade   Col Joseph J. Bartlett | 5th Maine: Col Nathaniel J. Jackson (w - Gaines' Mill), Ltc William S. Heath (k - Gaines' Mill), Cpt Clark S. Edwards 16th New York: Col Joseph Howland (w - Gaines' Mill), Maj Joel J. Seaver 27th New York: Ltc Alexander D. Adams 96th Pennsylvania: Col Henry L. Cake |
| First Division   BG Henry W. Slocum | 3rd Brigade   BG John Newton | 18th New York: Ltc George R. Myers, Maj John C. Meginnis 31st New York: Col Calvin E. Pratt (w - Gaines' Mill), Maj Alexander Raszewski 32nd New York: Col Roderick Matheson 95th Pennsylvania: Col John M. Gosline (mw - Gaines' Mill), Ltc Gustavus W. Town |
| First Division   BG Henry W. Slocum | Artillery   Cpt Edward R. Platt | 1st Massachusetts Light Artillery: Cpt Josiah Porter Battery A, 1st New Jersey Light Artillery: Cpt William Hexamer Battery D, 2nd U.S. Artillery: Lt Emory Upton |
| Second Division   BG William F. Smith | 1st Brigade   BG Winfield S. Hancock | 6th Maine: Col Hiram Burnham 43rd New York: Col Francis L. Vinton 49th Pennsylvania: Col William H. Irwin 5th Wisconsin: Col Amasa Cobb |
| Second Division   BG William F. Smith | 2nd Brigade   BG William T. H. Brooks (w - Savage's Station) | 2nd Vermont: Col Henry Whiting 3rd Vermont: Ltc Wheelock G. Veazey 4th Vermont: Col Edwin H. Stoughton 5th Vermont: Ltc Lewis A. Grant 6th Vermont: Col Nathan Lord, Jr. |
| Second Division   BG William F. Smith | 3rd Brigade   BG John W. Davidson | 7th Maine: Col Edwin C. Mason 20th New York: Col Francis Weiss 33rd New York: Col Robert F. Taylor 49th New York: Col Daniel D. Bidwell 77th New York: Col James B. McKean |
| Second Division   BG William F. Smith | Artillery   Cpt Romeyn B. Ayres | Battery E, 1st New York Light Artillery: Cpt Charles C. Wheeler 1st New York Light Artillery: Cpt Andrew Cowan 3rd New York Light Artillery: Cpt Thaddeus P. Mott Battery F, 5th U.S. Artillery: Cpt Romeyn B. Ayres |
| Second Division   BG William F. Smith | Cavalry | 5th Pennsylvania Cavalry (Companies I & K): Cpt John O'Farrell |
| | Cavalry | 1st New York Cavalry: Col Andrew T. McReynolds |

### Artillery Reserve

Col Henry J. Hunt
| Brigade | Batteries |
| First Brigade (Horse Artillery)   Ltc William Hays | Battery A, 2nd U.S. Artillery: Cpt John C. Tidball Battery B and L, 2nd U.S. Artillery: Cpt James M. Robertson Battery M, 2nd U.S. Artillery: Cpt Henry Benson Battery C and G, 3rd U.S. Artillery: Cpt Horatio G. Gibson |
| Second Brigade   Ltc George W. Getty | Battery E and G, 1st U.S. Artillery: Lt Alanson M. Randol Battery K, 1st U.S. Artillery: Lt Samuel S. Elder Battery G, 4th U.S. Artillery: Lt Charles M. Morgan Battery A, 5th U.S. Artillery: Lt Adelbert Ames Battery K, 5th U.S. Artillery: Cpt John R. Smead |
| Third Brigade   Maj Albert Arndt | Battery A, 1st Battalion, New York Volunteer Light Artillery: Cpt Otto Diederichs Battery B, 1st Battalion, New York Volunteer Light Artillery: Cpt Adolph Voegelee Battery C, 1st Battalion, New York Volunteer Light Artillery: Cpt John Knieriem Battery D, 1st Battalion, New York Volunteer Light Artillery: Cpt Edward Grimm |
| Fourth Brigade   Maj Edward R. Petherbridge | Battery A, Maryland Light Artillery: Cpt John W. Wolcott Battery B, Maryland Light Artillery: Cpt Alonzo Snow |
| Fifth Brigade   Cpt J. Howard Carlisle | Battery E, 2nd U.S. Artillery: Cpt J. Howard Carlisle Battery F and K, 3rd U.S. Artillery: Cpt La Rhett L. Livingston |
| Unattached Sixth Brigade | Battery G, 1st New York Light Artillery: Cpt John D. Frank New York Light, 5th Battery: Cpt Elijah D. Taft |
| Siege Train   Col Robert O. Tyler | 1st Connecticut Heavy Artillery: Col Robert O. Tyler |

### Cavalry Reserve

| Division | Brigade | Regiments and Others |
| Cavalry Reserve   BG Philip St. George Cooke |
| Cavalry Reserve   BG Philip St. George Cooke | First Brigade   Col Richard H. Rush | 6th Pennsylvania Cavalry: Col Richard H. Rush 5th United States Cavalry (Companies A, D, H, & L): Cpt Charles J. Whiting (w&c), Cpt Joseph H. McArthur |
| Cavalry Reserve   BG Philip St. George Cooke | Second Brigade   Col George A. H. Blake (w - Gaines' Mill) | 1st United States Cavalry (Companies A, C, F, & H): Ltc William N. Grier 6th United States Cavalry: Cpt August Kautz |

### Casey's Command

| Brigade | Regiments and Others |
| Casey's Command (at White House Landing)   BG Silas Casey (w) | 11th Pennsylvania Cavalry (Companies B, D, F, I, & K): Col Josiah Harlan Battery F, 1st New York Light Artillery: Cpt William R. Wilson 93rd New York (Companies B, C, D, E, G, & L): Col Thomas F. Morris |