Bristoe campaign order of battle: Union
The following units and commanders fought in the Bristoe campaign of the American Civil War on the Union side. The Confederate order of battle is shown separately. When multiple names of commanders are shown, this indicates the succession of command through the Campaign.
Military rank abbreviations used
MG = Major GeneralBG = Brigadier GeneralCol = ColonelLtc = Lieutenant ColonelMaj = MajorCpt = CaptainLt = LieutenantArmy of the Potomac
MG G. Meade, CommandingGeneral Staff and Headquarters
General Staff and Headquarters- Chief of Staff: MG Andrew A. Humphreys
- Chief of Artillery: BG Henry J. Hunt
- Assistant Adjutant General: BG Seth Williams
- Chief Quartermaster: BG Rufus Ingalls
- Provost Marshal General: BG Marsena R. Patrick
- * 80th New York : Ltc Jacob B. Hardenbergh
- * 93rd New York: Ltc Benjamin C. Butler
- * 2nd Pennsylvania Cavalry: Ltc Joseph B. Printon
- * 6th Pennsylvania Cavalry
- * Detachments Regular Cavalry and Volunteer Cavalry
- Engineer Brigade: BG Henry W. Benham
- * 15th New York : Capt Joseph Wood Jr.
- * 50th New York: Col William H. Pettes
- * U.S. Battalion: Capt George H. Mendell
- Guards and Orderlies
- * Oneida Cavalry: Capt Daniel P. Mann
- Signal Corps: Capt Lemuel B. Norton
I Corps">I Corps (Union Army)">I Corps
- MG John Newton
- Escort: 4th and 16th Pennsylvania Cavalry
| Division | Brigade | Regiments and others |
First Division: BG Lysander Cutler | 1st Brigade : Col William W. Robinson |
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| First Division: BG Lysander Cutler | 2nd Brigade: BG James C. Rice |
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| Second Division: BG John C. Robinson | 1st Brigade: Col Thomas F. McCoy |
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| Second Division: BG John C. Robinson | 2nd Brigade: BG Henry Baxter |
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| Third Division: BG John R. Kenly | 1st Brigade: Col Chapman Biddle |
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| Third Division: BG John R. Kenly | 2nd Brigade: Col Langhorne Wister |
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| Third Division: BG John R. Kenly | 3rd Brigade: Col Nathan T. Dushane |
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| Artillery Brigade: Col Charles S. Wainwright |
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II Corps">II Corps (Union Army)">II Corps
- MG Gouverneur K. Warren
- BG John C. Caldwell
- Escort:
- * 10th New York Cavalry, Company M: Lt James Matthews
- * 13th Pennsylvania Cavalry, Company G: Lt Robert Brown
| Division | Brigade | Regiments and others |
First Division: BG John C. Caldwell Col Paul A. Frank | 1st Brigade: Col Nelson A. Miles |
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| First Division: BG John C. Caldwell Col Paul A. Frank | 2nd Brigade : Col Patrick Kelly |
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| First Division: BG John C. Caldwell Col Paul A. Frank | 3rd Brigade: Col Paul A. Frank Col James A. Beaver |
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| First Division: BG John C. Caldwell Col Paul A. Frank | 4th Brigade: Col John R. Brooke |
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| Second Division: BG Alexander S. Webb | 1st Brigade: Col Francis E. Heath |
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| Second Division: BG Alexander S. Webb | 2nd Brigade "Philadelphia Brigade": Col De Witt C. Baxter |
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| Second Division: BG Alexander S. Webb | 3rd Brigade: Col James E. Mallon |
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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 |
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| Third Division: BG Alexander Hays | 3rd Brigade: BG Joshua T. Owen |
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| Artillery Brigade: Cpt John G. Hazard |
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III Corps">III Corps (Union Army)">III Corps
| Division | Brigade | Regiments and others |
First Division: MG David B. Birney | 1st Brigade: Col Charles H. T. Collis |
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| First Division: MG David B. Birney | 2nd Brigade: BG John Henry Hobart Ward |
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| First Division: MG David B. Birney | 3rd Brigade: Col P. Régis de Trobriand |
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| Second Division: BG Henry Prince | 1st Brigade: Col Robert McAllister |
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| Second Division: BG Henry Prince | 2nd Brigade : Col William R. Brewster |
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| Second Division: BG Henry Prince | 3rd Brigade: BG Gershom Mott |
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| Third Division: BG Joseph B. Carr | 1st Brigade: BG William H. Morris |
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| Third Division: BG Joseph B. Carr | 2nd Brigade: Col Joseph Warren Keifer |
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| Third Division: BG Joseph B. Carr | 3rd Brigade: Col Benjamin F. Smith |
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| Artillery Brigade: Cpt George E. Randolph |
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V Corps">V Corps (Union Army)">V Corps
- MG George Sykes
- Escort: 5th Michigan Cavalry : Lt Samuel Harris
- Provost Guard: 12th New York : Cpt Henry W. Ryder
| Division | Brigade | Regiments and others |
First Division: BG Charles Griffin | 1st Brigade: Col Joseph Hayes |
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| First Division: BG Charles Griffin | 2nd Brigade: Col Jacob B. Sweitzer |
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| First Division: BG Charles Griffin | 3rd Brigade: Col Joshua L. Chamberlain |
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| Second Division: BG Romeyn B. Ayres | 1st Brigade: Col Sidney Burbank |
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| Second Division: BG Romeyn B. Ayres | 3rd Brigade: BG Kenner Garrard |
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| Third Division: Col William McCandless | 1st Brigade: Col William C. Talley |
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| Third Division: Col William McCandless | 3rd Brigade: Col Martin D. Hardin |
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| Artillery Brigade: Cpt Augustus Pearl Martin |
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VI Corps">VI Corps (Union Army)">VI Corps
- MG John Sedgwick
- Escort: 1st Vermont Cavalry : Capt Andrew J. Grover
| Division | Brigade | Regiments and others |
First Division: BG Horatio G. Wright | 1st Brigade : BG Alfred T. A. Torbert |
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| First Division: BG Horatio G. Wright | 2nd Brigade: BG Joseph J. Bartlett |
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| First Division: BG Horatio G. Wright | 3rd Brigade: BG David Allen Russell |
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| Second Division: BG Albion P. Howe | 2nd Brigade : Col Lewis A. Grant |
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| Second Division: BG Albion P. Howe | 3rd Brigade: BG Thomas H. Neill |
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| Third Division: BG Henry D. Terry | 1st Brigade: BG Alexander Shaler |
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| Third Division: BG Henry D. Terry | 2nd Brigade: BG Henry L. Eustis |
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| Third Division: BG Henry D. Terry | 3rd Brigade: BG Frank Wheaton |
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| Artillery Brigade: Col Charles H. Tompkins |
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Cavalry Corps">Cavalry Corps (Union Army)">Cavalry Corps
- MG Alfred Pleasonton
- Headquarters Guard: 6th US: Maj Robert M. Morris
| Division | Brigade | Regiments and others |
First Division: BG John Buford | 1st Brigade: Col George H. Chapman |
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| First Division: BG John Buford | 2nd Brigade: Col Thomas Devin |
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| Second Division: BG David McM. Gregg | 1st Brigade: Col John P. Taylor |
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| Second Division: BG David McM. Gregg | 2nd Brigade: Col John Irvin Gregg |
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| Third Division: BG Judson Kilpatrick | 1st Brigade: BG Henry E. Davies Jr. |
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| Third Division: BG Judson Kilpatrick | 2nd Brigade : BG George A. Custer |
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| Third Division: BG Judson Kilpatrick | Headquarters Guard |
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| Reserve Brigade: BG Wesley Merritt |
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| unattached | ||
| Horse Artillery | 1st Brigade: Capt James M. Robertson |
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| Horse Artillery | 2nd Brigade: Cpt William M. Graham |
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Artillery Reserve
| Brigade | Batteries |
| 1st Regular Brigade: Cpt Alanson M. Randol |
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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: Maj Robert H. Fitzhugh |
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| Ammunition Guard |