Bristoe campaign order of battle: Union explained

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 General
BG = Brigadier General
Col = Colonel
Ltc = Lieutenant Colonel
Maj = Major
Cpt = Captain
Lt = Lieutenant

Army of the Potomac

MG George G. Meade, Commanding

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 (20th Militia): Ltc Jacob B. Hardenbergh
- 93rd New York: Ltc Benjamin C. Butler
- 2nd Pennsylvania Cavalry: Ltc Joseph B. Printon
- 6th Pennsylvania Cavalry (detachment)
- Detachments Regular Cavalry and Volunteer Cavalry
Engineer Brigade: BG Henry W. Benham
- 15th New York (battalion): Capt Joseph Wood Jr.
- 50th New York: Col William H. Pettes
- U.S. Battalion: Capt George H. Mendell
Guards and Orderlies
- Oneida (New York) Cavalry: Capt Daniel P. Mann
Signal Corps: Capt Lemuel B. Norton

- MG John Newton Escort: 4th and 16th Pennsylvania Cavalry (detachments)

width=25%	Division	width=25%	Brigade	Regiments and others
First Division: BG Lysander Cutler	1st Brigade ("Iron Brigade"): Col William W. Robinson	19th Indiana: Col Samuel J. Williams 24th Michigan: Col Henry A. Morrow 1st New York Sharpshooters (battalion): Cpt Joseph C. Arnold 2nd Wisconsin: Ltc John Mansfield 6th Wisconsin: Col Edward S. Bragg 7th Wisconsin: Maj Mark Finnicum
First Division: BG Lysander Cutler	2nd Brigade: BG James C. Rice	7th Indiana: Col Ira G. Grover 76th New York: Maj John W. Young 84th New York ("14th Brooklyn Militia"): Col Edward B. Fowler 95th New York: Maj Edward Pye 147th New York: Maj George Harney 56th Pennsylvania: Ltc George B. Osborn
Second Division: BG John C. Robinson	1st Brigade: Col Thomas F. McCoy	16th Maine: Ltc Charles W. Tilden 13th Massachusetts: Col Samuel H. Leonard 39th Massachusetts: Col Phineas Stearns Davis 94th New York: Maj Samuel A. Moffett 104th New York: Col Gilbert G. Prey 107th Pennsylvania: Maj Henry J. Shaefer
Second Division: BG John C. Robinson	2nd Brigade: BG Henry Baxter	12th Massachusetts: Maj Benjamin F. Cook 83rd New York (9th Militia): Col Joseph A. Moesch 97th New York: Maj Charles Northrup 11th Pennsylvania: Col Richard Coulter 88th Pennsylvania: Cpt Edmund Y. Patterson 90th Pennsylvania: Ltc William A. Leech
Third Division: BG John R. Kenly	1st Brigade: Col Chapman Biddle	121st Pennsylvania: Ltc Alexander Biddle 142nd Pennsylvania: Ltc Alfred. B. McCalmont
	2nd Brigade: Col Langhorne Wister	143rd Pennsylvania: Col Edmund L. Dana 149th Pennsylvania: Ltc Walton Dwight 150th Pennsylvania: Cpt Horatio Bell
	3rd Brigade: Col Nathan T. Dushane	1st Maryland: Ltc John W. Wilson 4th Maryland: Col Richard N. Bowerman 7th Maryland: Col Edwin H. Webster 8th Maryland: Col Andrew W. Denison
	Artillery Brigade: Col Charles S. Wainwright	2nd Maine Light: Cpt James A. Hall 5th Maine Light: Cpt Greenlief T. Stevens 1st New York Light, Battery E & Battery L: Cpt Gilbert H. Reynolds 1st Pennsylvania Light, Battery B: Cpt James H. Cooper 4th US, Battery B: Lt James Stewart

MG Gouverneur K. Warren (temporarily absent; returned October 12)
BG John C. Caldwell
Escort:
- 10th New York Cavalry, Company M: Lt James Matthews
- 13th Pennsylvania Cavalry, Company G: Lt Robert Brown

width=25%	Division	width=25%	Brigade	Regiments and others
First Division: BG John C. Caldwell Col Paul A. Frank	1st Brigade: Col Nelson A. Miles	61st New York: Ltc K. Oscar Broady 81st Pennsylvania: Col H. Boyd McKeen 140th Pennsylvania: Col John Fraser
	2nd Brigade ("Irish Brigade"): Col Patrick Kelly	28th Massachusetts: Col Richard Byrnes 63rd New York: Capt Thomas Touhy 69th New York: Cpt Richard Moroney 88th New York: Cpt Denis F. Burke 116th Pennsylvania: Cpt Seneca G. Willauer
	3rd Brigade: Col Paul A. Frank Col James A. Beaver	52nd New York: Ltc Charles G. Freudenberg 57th New York: Ltc Alford B. Chapman 66th New York: Ltc John S. Hammell 148th Pennsylvania: Col James A. Beaver, Maj George A. Fairlamb
	4th Brigade: Col John R. Brooke	2nd Delaware: Ltc David L. Stricker 64th New York: Maj Leman W. Bradley 53rd Pennsylvania: Capt Henry S. Dimm 145th Pennsylvania: Col Hiram L. Brown
Second Division: BG Alexander S. Webb	1st Brigade: Col Francis E. Heath	19th Maine: Ltc Henry W. Cunningham 15th Massachusetts: Ltc George C. Joslin 1st Minnesota: Maj Mark W. Downie 82nd New York (2nd Militia): Maj Thomas W. Baird
	2nd Brigade "Philadelphia Brigade": Col De Witt C. Baxter	69th Pennsylvania: Maj James Duffie 71st Pennsylvania: Col Richard PennSmith 72nd Pennsylvania: Ltc Theodore Hesser 106th Pennsylvania: Ltc William L. Curry
	3rd Brigade: Col James E. Mallon (k)	19th Massachusetts: Ltc Ansel D. Wass 20th Massachusetts: Maj Henry L. Abbott 7th Michigan: Maj Sylvanus W. Curtis 42nd New York: Cpt Robert C. Wright 59th New York: Cpt Horace P. Rugg
Third Division: BG Alexander Hays	1st Brigade ("Gibraltar Brigade"): Col Samuel S. Carroll	14th Indiana: Col John Coons 4th Ohio: Maj Gordon A. Stewart 8th Ohio: Ltc Franklin Sawyer 7th West Virginia (battalion): Ltc Jonathan H. Lockwood
		14th Connecticut: Col Theodore G. Ellis 1st Delaware: Ltc Edward P. Harris 12th New Jersey: Col J. Howard Willets 10th New York (battalion): Maj George F. Hopper 108th New York: Col Charles J. Powers
	3rd Brigade: BG Joshua T. Owen	39th New York: Maj Hugo Hildebrandt 111th New York: Col Clinton D. MacDougall 125th New York: Col Levin Crandell 126th New York: Col James M. Bull
	Artillery Brigade: Cpt John G. Hazard	1st New York Light, Battery G: Cpt Nelson Ames 1st Ohio Light, Battery H: Cpt James F. Huntington 1st Pennsylvania Light, Batteries F and G: Cpt R. Bruce Ricketts 1st Rhode Island Light, Battery A: Cpt William A. Arnold 1st Rhode Island Light, Battery B: Cpt Thomas Frederick Brown 1st US Light, Battery I: Lt Frank L. French

MG William H. French

width=25%	Division	width=25%	Brigade	Regiments and others
First Division: MG David B. Birney	1st Brigade: Col Charles H. T. Collis	57th Pennsylvania: Col Peter Sides 63rd Pennsylvania: Maj John A. Danks 68th Pennsylvania: Col Andrew H. Tippin 105th Pennsylvania: Col Calvin A. Craig 114th Pennsylvania: Maj Edward R. Bowen 141st Pennsylvania: Cpt Edwin A. Spaulding
	2nd Brigade: BG John Henry Hobart Ward	3rd Maine: Col Moses B. Lakeman 4th Maine: Col Elijah Walker, 86th New York: Maj Michael B. Stafford 124th New York: Ltc Francis M. Cummins 99th Pennsylvania: Ltc Edwin Ruthwin Biles 2nd US Sharpshooters: Ltc Homer R. Stoughton
	3rd Brigade: Col P. Régis de Trobriand	17th Maine: Ltc Charles B. Merrill 3rd Michigan: Col Byron R. Pierce 5th Michigan: Ltc John Pulford 40th New York: Col Thomas W. Egan 110th Pennsylvania: Maj Isaac Rogers 1st US Sharpshooters: Ltc Casper Trepp
Second Division: BG Henry Prince	1st Brigade: Col Robert McAllister	11th Massachusetts: Ltc Porter D. Tripp 16th Massachusetts: Ltc Waldo Merriam 11th New Jersey: Ltc John Schoonover 26th Pennsylvania: Maj Robert L. Bodine 84th Pennsylvania: Ltc Milton Opp
	2nd Brigade ("Excelsior Brigade"): Col William R. Brewster	70th New York: Col J. Egbert Farnum 71st New York: Maj Thomas Rafferty 72nd New York: Ltc John Leonard 73rd New York: Ltc Michael W. Burns 74th New York: Maj Henry M. Alles 120th New York: Cpt Abram L. Lockwood
	3rd Brigade: BG Gershom Mott	5th New Jersey: Col William J. Sewell 6th New Jersey: Col George C. Burling 7th New Jersey: Maj Frederick Cooper 8th New Jersey: Col John Ramsey 115th Pennsylvania: Ltc John P. Dunne
Third Division: BG Joseph B. Carr	1st Brigade: BG William H. Morris	14th New Jersey: Col William Snyder Truex 151st New York: Ltc Erwin A. Bowen
	2nd Brigade: Col Joseph Warren Keifer	6th Maryland: Col John Watt Horn 110th Ohio: Maj Otho H. Binkley 122d Ohio: Col William H. Ball 138th Pennsylvania: Col Matthew R. McClennan
	3rd Brigade: Col Benjamin F. Smith	106th New York: Maj Andrew N. McDonald 126th Ohio: Ltc William H. Harlan 67th Pennsylvania: Cpt Samuel Barry 87th Pennsylvania: Col John W. Schall
		4th Battery Maine Light: Cpt O'Neil W. Robinson Jr. 10th Massachusetts Light Battery: Cpt J. Henry Sleeper 1st New Jersey Light, Battery B: Cpt A. Judson Clark 1st New York Light, Battery D: Cpt George B. Winslow 12th Battery New York Light: Lt George K. Dauchy 1st Rhode Island Light, Battery E: 4th US, Battery K: Lt Robert James

MG George Sykes
Escort: 5th Michigan Cavalry (squadron): Lt Samuel Harris
Provost Guard: 12th New York (Companies D and E): Cpt Henry W. Ryder

width=25%	Division	width=25%	Brigade	Regiments and others
First Division: BG Charles Griffin	1st Brigade: BG James Barnes	18th Massachusetts: Maj William B. White 22nd Massachusetts: Col William S. Tilton 1st Michigan: Ltc William A. Throop 118th Pennsylvania: Maj Charles P. Herring
	2nd Brigade: Col Jacob B. Sweitzer	9th Massachusetts: Col Patrick R. Guiney 32nd Massachusetts: Col George L. Prescott 4th Michigan: Ltc George W. Lumbard 62nd Pennsylvania: Ltc James C. Hull
	3rd Brigade: Col Joshua L. Chamberlain	20th Maine: Maj Ellis Spear 16th Michigan: Cpt George H. Swan 44th New York: Ltc Freeman Conner 83rd Pennsylvania: Maj William H. Lamont
Second Division: BG Romeyn B. Ayres	1st Brigade: Col Sidney Burbank	2nd U.S. (6 companies): Cpt James W. Long 3rd U.S. (6 companies): Maj William E. Prince 11th U.S.: Maj Jonathan W. Gordon 12th U.S.: Maj Luther B. Bruen 14th U.S.: Capt Edward Mck. Hudson 17th U.S.: Ltc James D. Greene
Second Division: BG Romeyn B. Ayres	3rd Brigade: BG Kenner Garrard	140th New York: Col George Ryan 146th New York (Zouaves): Col David T. Jenkins 91st Pennsylvania: Col Edgar M. Gregory 155th Pennsylvania: Maj Alfred L. Pearson
Third Division: Col William McCandless	1st Brigade: Col William C. Talley	1st Pennsylvania Reserves: Ltc William W. Stewart 2nd Pennsylvania Reserves: Maj Patrick C. Donough 6th Pennsylvania Reserves: Col Wellington H. Ent 13th Pennsylvania Reserves: Maj William R. Hartshorne
Third Division: Col William McCandless	3rd Brigade: Col Martin D. Hardin	5th Pennsylvania Reserves: Ltc George Dare 9th Pennsylvania Reserves: Ltc James M. Snodgrass 10th Pennsylvania Reserves: Ltc James B. Knox 11th Pennsylvania Reserves: Col Samuel M. Jackson 12th Pennsylvania Reserves: Ltc Richard Gustin
	Artillery Brigade: Cpt Augustus Pearl Martin	3rd Battery Massachusetts Light: Lt Aaron F. Walcott 5th Battery Massachusetts Light: Cpt Charles A. Phillips 1st New York Light, Battery C: Cpt Almont Barnes 1st Ohio Light, Battery L: Cpt Frank C. Gibbs 5th US, Battery D: Lt Benjamin F. Rittenhouse

MG John Sedgwick
Escort: 1st Vermont Cavalry (detachment): Capt Andrew J. Grover

width=25%	Division	width=25%	Brigade	Regiments and others
First Division: BG Horatio G. Wright	1st Brigade (First New Jersey Brigade): BG Alfred T. A. Torbert	1st New Jersey: Ltc William Henry Jr. 2nd New Jersey: Col Samuel L. Buck 3rd New Jersey: Col Henry W. Brown 4th New Jersey: Ltc Charles Ewing 15th New Jersey: Col William H. Penrose
	2nd Brigade: BG Joseph J. Bartlett	5th Maine: Col Clark S. Edwards 121st New York: Col Emory Upton 95th Pennsylvania: Ltc Edward Carroll 96th Pennsylvania: Ltc William H. Lessig
	3rd Brigade: BG David Allen Russell	6th Maine: Col Benjamin F. Harris 49th Pennsylvania: Ltc Thomas M. Hulings 119th Pennsylvania: Col Peter C. Ellmaker 5th Wisconsin: Col Thomas S. Allen
Second Division: BG Albion P. Howe	2nd Brigade ("Vermont Brigade"): Col Lewis A. Grant	2nd Vermont: Col James H. Walbridge 3rd Vermont: Col Thomas O. Seaver 4th Vermont: Ltc George P. Foster 5th Vermont: Maj Charles P. Dudley 6th Vermont: Col Elisha L. Barney
Second Division: BG Albion P. Howe	3rd Brigade: BG Thomas H. Neill	7th Maine: Col Edwin C. Mason 43rd New York: Col Benjamin F. Baker 49th New York: Col Daniel D. Bidwell 77th New York: Ltc Winsor B. French 61st Pennsylvania: Ltc George F. Smith
Third Division: BG Henry D. Terry	1st Brigade: BG Alexander Shaler	65th New York: Col Joseph E. Hamblin 67th New York: Col Nelson Cross 122nd New York: Ltc Augustus Wade Dwight 23rd Pennsylvania: Col John Ely 82nd Pennsylvania: Col Isaac C. Bassett
	2nd Brigade: BG Henry L. Eustis	7th Massachusetts: Col Thomas D. Johns 10th Massachusetts: Ltc Joseph B. Parsons 2nd Rhode Island: Col Horatio Rogers Jr.
	3rd Brigade: BG Frank Wheaton	62nd New York: Col David J. Nevin 93rd Pennsylvania: Ltc John S. Long 98th Pennsylvania: Col John F. Ballier 102nd Pennsylvania: Col John W. Patterson 139th Pennsylvania: Ltc William H. Moody
	Artillery Brigade: Col Charles H. Tompkins	1st Massachusetts Light, Battery A: Cpt William H. McCartney 1st Battery New York Light: Cpt Andrew Cowan 3rd Battery New York Light: Cpt William A. Harn 1st Rhode Island, Battery C: Cpt Richard Waterman 1st Rhode Island, Battery G: Cpt George W. Adams 5th US, Battery F: Lt Leonard Martin 5th US, Battery M: Cpt James McKnight

MG Alfred Pleasonton
Headquarters Guard: 6th US: Maj Robert M. Morris

width=25%	Division	width=25%	Brigade	Regiments and others
	1st Brigade: Col George H. Chapman	8th Illinois: Maj John L. Beveridge 12th Illinois: Cpt Henry L. Reans 3rd Indiana: Maj William S. McClure 8th New York: Maj William H. Benjamin
	2nd Brigade: Col Thomas Devin	4th New York: Ltc Augustus Pruyn 6th New York: Maj William P. Hall 9th New York: Col William Sackett 17th Pennsylvania: Ltc Coe Durland 3rd West Virginia, Companies A & C: Maj Seymour B. Conger
Second Division: BG David McM. Gregg	1st Brigade: Col John P. Taylor	1st Maryland: Maj Charles H. Russell 1st Massachusetts: Col Horace B. Sargent 1st New Jersey: Col Percy Wyndham 6th Ohio: Ltc William Stedman 1st Pennsylvania: Ltc David Gardner 3rd Pennsylvania: Cpt James W. Walsh 1st Rhode Island: Col John L. Thompson
Second Division: BG David McM. Gregg	2nd Brigade: Col John Irvin Gregg	District of Columbia, Independent Company: Cpt William H. Orton 1st Maine: Col Charles H. Smith 10th New York: Maj Mathew Henry Avery 4th Pennsylvania: Maj George H. Covode 8th Pennsylvania: Col Pennock Huey 13th Pennsylvania: Ltc Garrick Mallery Jr. 16th Pennsylvania: Ltc John K. Robison
Third Division: BG Judson Kilpatrick	1st Brigade: BG Henry E. Davies Jr.	2nd New York: Ltc Otto Harhaus 5th New York: Maj John Hammond 18th Pennsylvania: Maj Harvey B. VanVorhis 1st West Virginia (10 companies): Maj Charles E. Capehart
	2nd Brigade ("Michigan Brigade"): BG George A. Custer	1st Michigan: Col Charles H. Town 5th Michigan: Col Russell A. Alger 6th Michigan: Ltc Henry E. Thompson 7th Michigan: Col William D. Mann 1st Vermont: Col Edward B. Sawyer
	Headquarters Guard	1st Ohio, Companies A & C: Cpt Noah Jones
	Reserve Brigade: BG Wesley Merritt	6th Pennsylvania: Maj Henry C. Whelam 1st US: Cpt Marcus A. Reno 2nd US: Cpt George A. Gordon 5th US: Cpt Abraham K. Arnold
	unattached	19th New York (1st Dragoons): Col Alfred Gibbs
Horse Artillery	1st Brigade: Capt James M. Robertson	6th Battery New York Light: Cpt Joseph W. Martin 2nd US, Batteries B and L: Lt Albert O. Vincent 2nd US, Battery D: Lt Edward B. Williston 2nd US, Battery M: Lt Alexander C. M. Pennington Jr. 4th US, Battery A: Lt Horatio B. Reed 4th US, Battery E: Cpt Samuel S. Elder
Horse Artillery	2nd Brigade: Cpt William M. Graham	9th Battery Michigan Light: Cpt Jabez J. Daniels 1st US, Batteries E & G: Lt Egbert W. Olcott 1st US, Battery K: Lt John Egan 2nd US, Battery A: Lt Robert Clarke 2nd US, Battery G: Lt John H. Butler 3rd US, Battery C: Cpt Dunbar R. Ransom

Artillery Reserve

BG Robert O. Tyler

width=30%	Brigade	Batteries
1st Regular Brigade: Cpt Alanson M. Randol	1st US, Battery H: Lt Philip D. Mason 3rd US, Batteries F & K: Lt George F. Barstow 4th US, Battery C: Lt Charles L. Fitzhugh
1st Volunteer Brigade: Ltc Freeman McGilvery	6th Maine Light: Lt William H. Rogers 9th Battery Massachusetts Light : Cpt John Bigelow 4th Battery New York Light : Lt Thomas Goodman Pennsylvania Light, Battery C and Battery F: Cpt James Thompson
2nd Volunteer Brigade: Cpt Elijah D. Taft	1st Connecticut Heavy, Battery B: Cpt Albert F. Brooker 1st Connecticut Heavy, Battery M: Cpt Franklin A. Pratt 1st New York Light, Battery B: Lt Robert E. Rogers 5th Battery New York Light: Cpt Elijah D. Taft 1st West Virginia Light, Battery C: Cpt Wallace Hill
3rd Volunteer Brigade: Maj Robert H. Fitzhugh	Maryland Light, Battery A: Lt Thomas Binyon 1st Battery New Hampshire Light: Cpt Frederick M. Edgell 1st New Jersey Light, Battery A: Cpt William Hexamer 1st New York Light, Battery K (11th Battery New York Light attached): Lt Edward L. Bailey 15th Battery New York Light: Cpt Patrick Hart
Ammunition Guard	6th New York Heavy Artillery: Col J. Howard Kitching

References

U.S. War Department, The War of the Rebellion: a Compilation of the Official Records of the Union and Confederate Armies], U.S. Government Printing Office, 1880 - 1901.