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 George G. Meade, Commanding
General Staff:
General Headquarters:
Command of the Provost Marshal General: BG Marsena R. Patrick
Guards and Orderlies:
Engineer Brigade: BG Henry W. Benham
MG John F. Reynolds (k)
MG Abner Doubleday
MG John Newton
General Headquarters:
First Division
BG Solomon Meredith (w)
Col William W. Robinson
Second Division
BG Gabriel R. Paul (w)
Col Samuel H. Leonard (w)
Col Adrian R. Root (w&c)
Col Richard Coulter (w)
Col Peter Lyle
Col Richard Coulter
BG Henry Baxter
Third Division
MG Abner Doubleday
BG Thomas A. Rowley
MG Abner Doubleday