The Union order of battle during the Battle of Gettysburg includes the American Civil War officers and men of the Army of the Potomac (multiple commander names indicate command succession of command during the three-day battle (July 1–3, 1863). Order of battle compiled from the army organization during the battle, the casualty returns and the reports.
MG = Major General
BG = Brigadier General
Col = Colonel
Ltc = Lieutenant Colonel
Maj = Major
Cpt = Captain
Lt = Lieutenant
Sgt = Sergeant
w = wounded
mw = mortally wounded
k = killed
c = captured
m = missing
MG George G. Meade, Commanding
General Staff and Headquarters
General Staff:
Chief of Staff: MG Daniel Butterfield (w)
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 (w)
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 (w)
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 (8 companies): Cpt Edwin W. H. Read
2nd Pennsylvania Cavalry: Col Richard Butler Price
6th Pennsylvania Cavalry (Companies E & I): Cpt James Starr
Regular cavalry
Guards and Orderlies:
Oneida (New York) Cavalry: Cpt Daniel P. Mann
Engineer Brigade: BG Henry W. Benham
15th New York (3 companies): Maj Walter L. Cassin
50th New York: Col William H. Pettes
U.S. Battalion: Cpt George H. Mendell
MG John F. Reynolds (k)
MG Abner Doubleday
MG John Newton
General Headquarters:
1st Maine Cavalry, Company L: Cpt Constantine Taylor
MG Winfield S. Hancock (w)
BG John Gibbon
BG William Hays
General Headquarters:
6th New York Cavalry, Companies D and K: Cpt Riley Johnson (Escort)
53rd Pennsylvania Infantry , Companies A, B and K: Maj Octavus Bull (Provost Marshal 2nd Corps)
MG Daniel E. Sickles (w)
MG David B. Birney (w)
MG George Sykes
General Headquarters:
12th New York Infantry (Companies D and E): Cpt Henry W. Ryder
17th Pennsylvania Cavalry, Companies D and H: Cpt William Thompson
MG John Sedgwick
General Headquarters:
1st New Jersey Cavalry, Company L and 1st Pennsylvania Cavalry, Company H: Cpt William S. Craft
MG Oliver O. Howard
MG Carl Schurz
General Headquarters:
1st Indiana Cavalry, Companies I and K: Cpt Abram Sharra
8th New York Infantry (1 company): Lt Hermann Foerster
MG Henry W. Slocum
BG Alpheus S. Williams
Provost Guard:
10th Maine Battalion (3 companies): Cpt John D. Beardsley
MG Alfred Pleasonton
Headquarter Guards:
1st Ohio, Company A: Cpt Noah Jones (Second Division)
1st Ohio, Company C: Cpt Samuel N. Stanford (Third Division)
BG Robert O. Tyler
Cpt James M. Robertson
Headquarter Guard:
32nd Massachusetts Infantry, Company C: Cpt Josiah C. Fuller
