The following Union Army units and commanders fought in the Battle of Chancellorsville of the American Civil War. The Confederate order of battle is listed separately. Order of battle compiled from the army organization during the battle, the casualty returns, and the reports.

Abbreviations used

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

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

Army of the Potomac

MG Joseph Hooker

General Staff and Headquarters

General Staff: Chief of Staff: MG Daniel Butterfield Assistant Adjutant General: BG Seth Williams Chief Quartermaster: BG Rufus Ingalls Chief of Engineers: BG Gouverneur K. Warren Bureau of Military Information: Col George H. Sharpe Medical Director: Maj Jonathan Letterman

General Headquarters:

Command of the Provost-Marshal-General: BG Marsena R. Patrick 93rd New York: Col John S. Crocker 8th United States, Companies A, B, C, D, F, and G: Cpt Edwin W. H. Read 6th Pennsylvania Cavalry, Companies E and I: Cpt James Starr Detachment Regular Cavalry: Lt Tattnall Paulding

Patrick's Brigade: Col William F. Rogers 21st New York: Ltc Chester W. Steinberg 23rd New York: Col Henry C. Hoffman 35th New York: Col John G. Todd 80th New York (20th Militia): Col Theodore B. Gates Maryland Light Artillery, Battery B: Cpt Alonzo Snow Ohio Light Artillery, 12th Battery: Cpt Aaron C. Johnson

Engineer Brigade: BG Henry W. Benham 15th New York Engineers: Col Clinton G. Colgate 50th New York Engineers: Col Charles B. Stuart United States Engineer Battalion: Cpt Chauncey B. Reese

Signal Corps: Cpt Samuel T. Cushing

Ordnance Detachment: Lt John R. Edie, Jr.

Guards and Orderlies: Oneida (New York) Cavalry: Cpt Daniel P. Mann

I Corps

MG John F. Reynolds

Chief of Artillery: Col Charles S. Wainwright

Escort: 1st Maine Cavalry, Company L: Cpt Constantine Taylor

Division Brigade Regiments and OthersFirst Division

BG James S. Wadsworth 1st Brigade

Col Walter Phelps, Jr. 22nd New York: Maj Thomas J. Strong 24th New York: Col Samuel R. Beardsley 30th New York: Col William M. Searing 84th New York (14th Militia): Col Edward B. Fowler 2nd Brigade

BG Lysander Cutler 7th Indiana: Ltc Ira G. Grover 76th New York: Col William P. Wainwright 95th New York: Col George H. Biddle 147th New York: Col John G. Butler 56th Pennsylvania: Col William Hofmann 3rd Brigade

BG Gabriel R. Paul 22nd New Jersey: Col Abraham G. Demarest 29th New Jersey: Col William R. Taylor 30th New Jersey: Col John J. Cladek 31st New Jersey: Ltc Robert R. Honeyman 137th Pennsylvania: Col Joseph B. Kiddoo 4th Brigade

BG Solomon Meredith 19th Indiana: Col Samuel J. Williams 24th Michigan: Col Henry A. Morrow 2nd Wisconsin: Col Lucius Fairchild 6th Wisconsin: Col Edward S. Bragg 7th Wisconsin: Col William W. Robinson Artillery

Cpt John A. Reynolds New Hampshire Light, 1st Battery: Cpt Frederick M. Edgell 1st New York Light, Battery L: Cpt John A. Reynolds 4th United States, Battery B: Lt James StewartSecond Division

BG John C. Robinson 1st Brigade

Col Adrian R. Root 16th Maine: Col Charles W. Tilden 94th New York: Cpt Samuel A. Moffett 104th New York: Col Gilbert G. Prey 107th Pennsylvania: Col Thomas F. McCoy 2nd Brigade

BG Henry Baxter 12th Massachusetts: Col James L. Bates 26th New York: Ltc Gilbert S. Jennings 90th Pennsylvania: Col Peter Lyle 136th Pennsylvania: Col Thomas M. Bayne 3rd Brigade

Col Samuel H. Leonard 13th Massachusetts: Ltc N. Walter Batchelder 83rd New York (9th Militia): Ltc Joseph A. Moesch 97th New York: Col Charles Wheelock 11th Pennsylvania: Col Richard Coulter 88th Pennsylvania: Ltc Louis Wagner Artillery

Cpt Dunbar R. Ransom Maine Light, 2nd Battery (B): Cpt James A. Hall Maine Light, 5th Battery (E): Cpt George F. Leppien (mw), Lt Edmund Kirby (mw), Lt Greenlief T. Stevens Pennsylvania Light, Battery C: Cpt James Thompson 5th United States, Battery C: Cpt Dunbar R. RansomThird Division

MG Abner Doubleday 1st Brigade

BG Thomas A. Rowley 121st Pennsylvania: Col Chapman Biddle 135th Pennsylvania: Col James R. Porter 142nd Pennsylvania: Col Robert P. Cummins 151st Pennsylvania: Col Harrison Allen 2nd Brigade

Col Roy Stone 143rd Pennsylvania: Col Edmund L. Dana 149th Pennsylvania: Ltc Walton Dwight 150th Pennsylvania: Col Langhorne Wister Artillery

Maj Ezra W. Matthews 1st Pennsylvania Light, Battery B: Cpt James H. Cooper 1st Pennsylvania Light, Battery F: Lt R. Bruce Ricketts 1st Pennsylvania Light, Battery G: Cpt Frank P. Amsden

II Corps

MG Darius N. Couch

Chief of Artillery and Assistant Inspector-General: Ltc Charles H. Morgan

Escort: 6th New York Cavalry, Companies D and K: Cpt Riley Johnson

Division Brigade Regiments and OthersFirst Division

MG Winfield S. Hancock 1st Brigade

BG John C. Caldwell 5th New Hampshire: Col Edward E. Cross, Ltc Charles E. Hapgood 61st New York: Col Nelson A. Miles (w), Ltc K. Oscar Broady 81st Pennsylvania: Col H. Boyd McKeen (w) 148th Pennsylvania: Col James A. Beaver (w), Maj George A. Fairlamb 2nd Brigade

BG Thomas F. Meagher 28th Massachusetts: Col Richard Byrnes 63rd New York: Ltc Richard C. Bentley 69th New York: Cpt James E. McGee 88th New York: Col Patrick Kelly 116th Pennsylvania (battalion): Maj St. Clair A. Mulholland 3rd Brigade

BG Samuel K. Zook 52nd New York: Col Paul Frank (w), Ltc Charles G. Freudenberg 57th New York: Ltc Alford B. Chapman 66th New York: Col Orlando H. Morris 140th Pennsylvania: Col Richard P. Roberts 4th Brigade

Col John R. Brooke 27th Connecticut: Col Richard S. Bostwick (c) 2nd Delaware: Ltc David L. Stricker 64th New York: Col Daniel G. Bingham 53rd Pennsylvania: Ltc Richards McMichael 145th Pennsylvania: Col Hiram L. Brown Artillery

Cpt Rufus D. Pettit 1st New York Light, Battery B: Cpt Rufus D. Pettit 4th United States, Battery C: Lt Evan ThomasSecond Division

BG John Gibbon 1st Brigade

BG Alfred Sully

Col Henry W. Hudson

Col Byron Laflin 19th Maine: Col Francis E. Heath 15th Massachusetts: Maj George C. Joslin 1st Minnesota: Ltc William Colville, Jr. 34th New York: Col Byron Laflin, Ltc John Beverly 82nd New York (2nd Militia): Col Henry W. Hudson, Ltc James Huston 2nd Brigade

BG Joshua T. Owen 69th Pennsylvania: Col Dennis O'Kane 71st Pennsylvania: Col Richard P. Smith 72nd Pennsylvania: Col De Witt C. Baxter 106th Pennsylvania: Col Turner G. Morehead 3rd Brigade

Col Norman J. Hall 19th Massachusetts: Ltc Arthur F. Devereux 20th Massachusetts: Ltc George N. Macy 7th Michigan: Cpt Amos E. Steele, Jr. 42nd New York: Col James E. Mallon 59th New York: Ltc Max A. Thoman 127th Pennsylvania: Col William W. Jennings Sharpshooters 1st Company Massachusetts: Cpt William Plumer Artillery 1st Rhode Island Light, Battery A: Cpt William A. Arnold 1st Rhode Island Light, Battery B: Cpt Thomas Frederick BrownThird Division

MG William H. French 1st Brigade

Col Samuel S. Carroll 14th Indiana: Col John Coons 24th New Jersey: Col William B. Robertson 28th New Jersey: Ltc John A. Wildrick (c), Maj Samuel K. Wilson 4th Ohio: Ltc Leonard W. Carpenter 8th Ohio: Ltc Franklin Sawyer 7th West Virginia: Col Joseph Snider, Ltc Jonathan H. Lockwood 2nd Brigade

BG William Hays (w&c)

Col Charles J. Powers 14th Connecticut: Maj Theodore G. Ellis 12th New Jersey: Col J. Howard Willets (w), Maj John T. Hill 108th New York: Col Charles J. Powers, Ltc Francis E. Pierce 130th Pennsylvania: Col Levi Maish (w), Maj Joseph S. Jenkins 3rd Brigade

Col John D. MacGregor

Col Charles Albright 1st Delaware: Col Thomas A. Smyth 4th New York: Ltc William Jameson 132nd Pennsylvania: Col Charles Albright, Ltc Joseph E. Shreve Artillery 1st New York Light, Battery G: Lt Nelson Ames 1st Rhode Island Light, Battery G: Cpt George W. Adams Provost Guard 10th New York (4 companies): Maj George F. Hopper Reserve Artillery 1st United States, Battery I: Lt Edmund Kirby, Lt George A. Woodruff

4th United States, Battery A: Lt Alonzo H. Cushing

III Corps

MG Daniel Sickles

Chief of Artillery: Cpt George E. Randolph

Division Brigade Regiments and OthersFirst Division

BG David B. Birney 1st Brigade

BG Charles K. Graham

Col Thomas W. Egan 57th Pennsylvania: Col Peter Sides 63rd Pennsylvania: Ltc William S. Kirkwood (mw), Cpt James F. Ryan 68th Pennsylvania: Col Andrew H. Tippin 105th Pennsylvania: Col Amor A. McKnight (k), Ltc Calvin A. Craig 114th Pennsylvania: Col Charles H. T. Collis, Ltc Frederick F. Cavada 141st Pennsylvania: Col Henry J. Madill 2nd Brigade

BG J. H. Hobart Ward 20th Indiana: Col John Wheeler 3rd Maine: Col Moses B. Lakeman 4th Maine: Col Elijah Walker 38th New York: Col P. Regis De Trobriand 40th New York: Col Thomas W. Egan 99th Pennsylvania: Col Asher S. Leidy 3rd Brigade

Col Samuel B. Hayman 17th Maine: Ltc Charles B. Merrill, Col Thomas A. Roberts 3rd Michigan: Col Byron R. Pierce (w), Ltc Edwin S. Pierce 5th Michigan: Ltc Edward T. Sherlock (k), Maj John Pulford 1st New York: Ltc Francis L. Leland 37th New York: Ltc Gilbert Riordan Artillery

Cpt A. Judson Clark New Jersey Light, Battery B: Lt Robert Sims 1st Rhode Island Light, Battery E: Lt Pardon S. Jastram 3rd United States, Batteries F and K: Lt John G. TurnbullSecond Division

MG Hiram Berry (k)

BG Joseph B. Carr 1st Brigade

BG Joseph B. Carr

Col William E. Blaisdell 1st Massachusetts: Col Napoleon B. McLaughlen 11th Massachusetts: Col William E. Blaisdell, Ltc Porter D. Tripp 16th Massachusetts: Ltc Waldo Merriam 11th New Jersey: Col Robert McAllister 26th Pennsylvania: Col Benjamin C. Tilghman (w), Maj Robert L. Bodine 2nd Brigade

BG Joseph W. Revere

Col J. Egbert Farnum 70th New York: Col J. Egbert Farnum, Ltc Thomas Holt 71st New York: Col Henry L. Potter 72nd New York: Col William O Stevens (k), Maj John Leonard 73rd New York: Maj Michael W. Burns 74th New York: Ltc Wm. H. Lounsbury (w), Cpt Henry M. Alles (w), Cpt Francis E. Tyler 120th New York: Ltc Cornelius D. Westbrook 3rd Brigade

BG Gershom Mott (w)

Col William J. Sewell 5th New Jersey: Col William J. Sewell, Maj Ashbel W. Angel (w), Cpt Virgil M. Healy 6th New Jersey: Col George C. Burling (w), Ltc Stephen R. Gilkyson 7th New Jersey: Col Louis R. Francine, Ltc Francis Price 8th New Jersey: Col John Ramsey (w), Cpt John Langton 2nd New York: Col Sidney W. Park (w), Ltc William A. Olmsted 115th Pennsylvania: Col Francis A. Lancaster (k), Maj John P. Dunne Artillery

Cpt Thomas W. Osborn 1st New York Light, Battery D: Lt George B. Winslow New York Light, 4th Battery: Lt William T. McLean 1st United States, Battery H: Lt Justin E. Dimick (mw), Lt James A. Sanderson 4th United States, Battery K: Lt Francis W. SeeleyThird Division

BG Amiel W. Whipple (mw)

BG Charles K. Graham 1st Brigade

Col Emlen Franklin 86th New York: Ltc Bena J. Chapin (k), Cpt Jacob H. Lansing 124th New York: Col A. Van Horne Ellis 122nd Pennsylvania: Ltc Edward McGovern 2nd Brigade

Col Samuel M. Bowman 12th New Hampshire: Col Joseph H. Potter (w), Ltc John F. Marsh (w), Maj George D. Savage (w) 84th Pennsylvania: Ltc Milton Opp 110th Pennsylvania: Col James Crowther (k), Maj David M. Jones (w&c) 3rd Brigade

Col Hiram Berdan 1st United States Sharpshooters: Ltc Casper Trepp 2nd United States Sharpshooters: Maj Homer R. Stoughton Artillery

Cpt James F. Huntington New York Light, 10th Battery: Lt Samuel Lewis New York Light, 11th Battery: Lt John E. Burton 1st Ohio Light, Battery H: Cpt James F. Huntington

V Corps

MG George Meade

Chief of Artillery: Cpt Stephen H. Weed

Escort: 17th Pennsylvania Cavalry (2 companies): Cpt William Thompson

Division Brigade Regiments and OthersFirst Division

BG Charles Griffin 1st Brigade

BG James Barnes 2nd Maine: Col George Varney 18th Massachusetts: Col Joseph Hayes