Battle of Gettysburg order of battle: Union
The Union order of battle during the Battle of Gettysburg includes the American Civil War officers and men of the Army of the Potomac. Order of battle compiled from the army organization during the battle, the casualty returns and the reports.
Abbreviations used
Military rank
MG = Major GeneralBG = Brigadier GeneralCol = ColonelLtc = Lieutenant ColonelMaj = MajorCpt = CaptainLt = LieutenantSgt = SergeantOther
w = woundedmw = mortally woundedk = killedc = capturedm = missingArmy of the Potomac
MG G. Meade, CommandingGeneral Staff and Headquarters
General Staff:
- Chief of Staff: MG Daniel Butterfield
- Assistant Adjutant General: BG Seth Williams
- Assistant Inspector General: Col Edmund Schriver
- Chief Quartermaster: BG Rufus Ingalls
- Commissaries and subsistence: Col Henry F. Clarke
- Chief of Artillery: BG Henry J. Hunt
- Chief Ordnance Officer: Cpt Daniel W. Flagler
- Chief Signal Officer: Cpt Lemuel B. Norton
- Medical Director: Maj Jonathan Letterman
- Chief of Engineers: BG Gouverneur K. Warren
- Bureau of Military Information: Col George H. Sharpe
General Headquarters:
Command of the Provost Marshal General: BG Marsena R. Patrick
- 93rd New York: Col John S. Crocker
- 8th United States : Cpt Edwin W. H. Read
- 2nd Pennsylvania Cavalry: Col Richard Butler Price
- 6th Pennsylvania Cavalry : Cpt James Starr
- Regular cavalry
Guards and Orderlies:
- Oneida Cavalry: Cpt Daniel P. Mann
Engineer Brigade: BG Henry W. Benham
- 15th New York Engineers : Maj Walter L. Cassin
- 50th New York Engineers: Col William H. Pettes
- U.S. Battalion: Cpt George H. Mendell
I Corps
MG John F. ReynoldsMG Abner Doubleday
MG John Newton
General Headquarters:
- 1st Maine Cavalry, Company L: Cpt Constantine Taylor
| Division | Brigade | Regiments and Others |
First Division BG James S. Wadsworth | 1st Brigade BG Solomon Meredith Col William W. Robinson |
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| First Division BG James S. Wadsworth | 2nd Brigade BG Lysander Cutler |
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| Second Division BG John C. Robinson | 1st Brigade BG Gabriel R. Paul Col Samuel H. Leonard Col Adrian R. Root Col Richard Coulter Col Peter Lyle Col Richard Coulter |
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| Second Division BG John C. Robinson | 2nd Brigade BG Henry Baxter |
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| Third Division MG Abner Doubleday BG Thomas A. Rowley | 1st Brigade Col Chapman Biddle BG Thomas A. Rowley |
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| Third Division MG Abner Doubleday BG Thomas A. Rowley | 2nd Brigade Col Roy Stone Col Langhorne Wister Col Edmund L. Dana |
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| Third Division MG Abner Doubleday BG Thomas A. Rowley | 3rd Brigade BG George J. Stannard Col Francis V. Randall |
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| Artillery Brigade Col Charles S. Wainwright |
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II Corps
MG Winfield S. HancockBG John Gibbon
BG William Hays
General Headquarters:
- 6th New York Cavalry, Companies D and K: Cpt Riley Johnson
- 53rd Pennsylvania Infantry, Companies A, B and K: Maj Octavus Bull
| Division | Brigade | Regiments and Others |
First Division BG John C. Caldwell | 1st Brigade Col Edward E. Cross Col H. Boyd McKeen |
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| First Division BG John C. Caldwell | 2nd Brigade Col Patrick Kelly |
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| First Division BG John C. Caldwell | 3rd Brigade BG Samuel K. Zook Ltc Charles G. Freudenberg Col Richard P. Roberts Ltc John Fraser |
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| First Division BG John C. Caldwell | 4th Brigade Col John R. Brooke |
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| Second Division BG John Gibbon BG William Harrow | 1st Brigade BG William Harrow Col Francis E. Heath |
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| Second Division BG John Gibbon BG William Harrow | 2nd Brigade BG Alexander S. Webb |
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| Second Division BG John Gibbon BG William Harrow | 3rd Brigade Col Norman J. Hall |
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| Second Division BG John Gibbon BG William Harrow | unattached |
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| Third Division BG Alexander Hays | 1st Brigade Col Samuel S. Carroll |
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| Third Division BG Alexander Hays | 2nd Brigade Col Thomas A. Smyth Ltc Francis E. Pierce |
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| Third Division BG Alexander Hays | 3rd Brigade Col George L. Willard Col Eliakim Sherrill Ltc James M. Bull Col Clinton D. MacDougall Col Eliakim Sherrill |
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| Artillery Brigade Cpt John G. Hazard |
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III Corps
MG Daniel E. SicklesMG David B. Birney
| Division | Brigade | Regiments and Others |
First Division MG David B. Birney BG J. H. Hobart Ward | 1st Brigade BG Charles K. Graham Col Andrew H. Tippin Col Henry J. Madill |
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| First Division MG David B. Birney BG J. H. Hobart Ward | 2nd Brigade BG J. H. Hobart Ward Col Hiram Berdan |
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| First Division MG David B. Birney BG J. H. Hobart Ward | 3rd Brigade Col P. Régis de Trobriand |
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| Second Division BG Andrew A. Humphreys | 1st Brigade BG Joseph B. Carr |
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| Second Division BG Andrew A. Humphreys | 2nd Brigade Col William R. Brewster |
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| Second Division BG Andrew A. Humphreys | 3rd Brigade Col George C. Burling |
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| Artillery Brigade Cpt George E. Randolph Cpt A. Judson Clark |
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V Corps
MG George SykesGeneral Headquarters:
- 12th New York Infantry : Cpt Henry W. Ryder
- 17th Pennsylvania Cavalry, Companies D and H: Cpt William Thompson
VI Corps
MG John SedgwickGeneral Headquarters:
- 1st New Jersey Cavalry, Company L and 1st Pennsylvania Cavalry, Company H: Cpt William S. Craft
XI Corps
MG Oliver O. HowardMG Carl Schurz
General Headquarters:
- 1st Indiana Cavalry, Companies I and K: Cpt Abram Sharra
- 8th New York Infantry : Lt Hermann Foerster
| Division | Brigade | Regiments and Others |
First Division BG Francis C. Barlow BG Adelbert Ames | 1st Brigade Col Leopold von Gilsa |
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| First Division BG Francis C. Barlow BG Adelbert Ames | 2nd Brigade BG Adelbert Ames Col Andrew L. Harris |
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| Second Division BG Adolph von Steinwehr | 1st Brigade Col Charles R. Coster |
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| Second Division BG Adolph von Steinwehr | 2nd Brigade Col Orland Smith |
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| Third Division MG Carl Schurz BG Alexander Schimmelfennig MG Carl Schurz | 1st Brigade BG Alexander Schimmelfennig Col George von Amsberg |
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| Third Division MG Carl Schurz BG Alexander Schimmelfennig MG Carl Schurz | 2nd Brigade Col Wladimir Krzyzanowski |
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| Artillery Brigade Maj Thomas W. Osborn |
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XII Corps
MG Henry W. SlocumBG Alpheus S. Williams
Provost Guard:
- 10th Maine Battalion : Cpt John D. Beardsley
| Division | Brigade | Regiments and Others |
First Division BG Alpheus S. Williams BG Thomas H. Ruger | 1st Brigade Col Archibald L. McDougall |
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| First Division BG Alpheus S. Williams BG Thomas H. Ruger | 3rd Brigade BG Thomas H. Ruger Col Silas Colgrove |
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| Second Division BG John W. Geary | 1st Brigade Col Charles Candy |
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| Second Division BG John W. Geary | 2nd Brigade Col George A. Cobham, Jr. BG Thomas L. Kane |
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| Second Division BG John W. Geary | 3rd Brigade BG George S. Greene |
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| Reporting directly | Lockwood's Brigade BG Henry H. Lockwood |
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| Artillery Brigade Lt Edward D. Muhlenberg |
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Cavalry Corps
MG Alfred PleasontonHeadquarter Guards:
- 1st Ohio Cavalry, Company A: Cpt Noah Jones
- 1st Ohio Cavalry, Company C: Cpt Samuel N. Stanford
Artillery Reserve
BG Robert O. TylerCpt James M. Robertson
Headquarter Guard:
- 32nd Massachusetts Infantry, Company C: Cpt Josiah C. Fuller
| Brigade | Batteries |
| 1st Regular Brigade Cpt Dunbar R. Ransom |
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| 1st Volunteer Brigade Ltc Freeman McGilvery |
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| 2nd Volunteer Brigade Cpt Elijah D. Taft |
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| 3rd Volunteer Brigade Cpt James F. Huntington |
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| 4th Volunteer Brigade Cpt Robert H. Fitzhugh |
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| Train Guard |