The following Union Army units and commanders fought in the Second Battle of Bull Run, also known as the Second Battle of Manassas, of the American Civil War. The Confederate order of battle is listed separately. Order of battle compiled from the army organization[1] during the battle,[2] the casualty returns[3] and the reports.[4]
See main article: Army of Virginia. MG John Pope[5]
Chief of Staff: Col George D. Ruggles
Chief of Artillery: Cpt Alexander Piper
Chief of Cavalry: BG Washington L. Elliott (w)
Headquarters Escort:
See main article: XI Corps (Union Army). MG Franz Sigel (w)
Chief of Artillery: Cpt Ulric Dahlgren
Headquarters Escort:
width=25% | Division | width=25% | Brigade | Regiments and Others |
---|---|---|---|---|
First Division BG Robert C. Schenck (w) BG Julius Stahel | 1st Brigade BG Julius Stahel Col Adolphus Buschbeck |
| ||
2nd Brigade Col Nathaniel C. McLean |
| |||
Second Division BG Adolph von Steinwehr | 1st Brigade[6] Col John A. Koltes (k) Ltc Gustavus A. Muhleck |
| ||
Third Division BG Carl Schurz | 1st Brigade Col Alexander Schimmelfennig |
| ||
2nd Brigade Col Wlodzimierz Krzyzanowski |
| |||
Unattached |
| |||
Reporting directly | Independent Brigade BG Robert H. Milroy |
| ||
Cavalry Brigade Col John Beardsley[7] |
| |||
Reserve Artillery[8] Cpt Louis Schirmer |
|
See main article: XII Corps (Union Army).
width=25% | Brigade | Regiments and Others |
---|---|---|
Cavalry Brigade[9] BG John Buford[10] (w) |
| |
Artillery |
See main article: I Corps (Union Army). MG Irvin McDowell
Chief of Staff: Col Edmund Schriver
Chief of Artillery: Maj Davis Tillson
Headquarters Troops:
width=25% | Division | width=25% | Brigade | Regiments and Others |
---|---|---|---|---|
First Division BG Rufus King[12] BG John P. Hatch (w) BG Abner Doubleday | 1st Brigade BG John P. Hatch Col Timothy Sullivan |
| ||
2nd Brigade BG Abner Doubleday Col William P. Wainwright |
| |||
3rd Brigade BG Marsena R. Patrick |
| |||
4th Brigade BG John Gibbon |
| |||
Artillery |
| |||
Second Division BG James B. Ricketts | 1st Brigade BG Abram Duryée |
| ||
2nd Brigade BG Zealous B. Tower (w) Col William H. Christian |
| |||
3rd Brigade Col John W. Stiles |
| |||
4th Brigade Col Joseph Thoburn (w) |
| |||
Artillery |
| |||
Pennsylvania Reserves[14] BG John F. Reynolds | 1st Brigade BG George G. Meade |
| ||
2nd Brigade BG Truman Seymour |
| |||
3rd Brigade BG Conrad F. Jackson[15] Col Martin Davis Hardin (w) Col James T. Kirk (w) Ltc Robert Anderson |
| |||
Artillery Cpt Dunbar R. Ransom |
| |||
Reporting directly | Cavalry Brigade BG George D. Bayard |
| ||
Unattached |
|
width=25% | Brigade | Regiments and Others |
---|---|---|
Piatt's Brigade[16] BG Abram S. Piatt |
|
See main article: Army of the Potomac. The following Corps from the Army of the Potomac were attached to the Army of Virginia.
See main article: III Corps (Union Army). MG Samuel P. Heintzelman
width=25% | Division | width=25% | Brigade | Regiments and Others |
---|---|---|---|---|
First Division MG Philip Kearny | 1st Brigade BG John C. Robinson |
| ||
2nd Brigade BG David B. Birney |
| |||
3rd Brigade Col Orlando Poe |
| |||
Artillery |
| |||
Second Division MG Joseph Hooker | 1st Brigade BG Cuvier Grover |
| ||
2nd Brigade Col Nelson Taylor |
| |||
3rd Brigade Col Joseph B. Carr |
|
See main article: V Corps (Union Army). MG Fitz John Porter
Chief of Staff: Ltc Frederick T. Locke
width=25% | Division | width=25% | Brigade | Regiments and Others |
---|---|---|---|---|
First Division BG Daniel Butterfield[20] | 1st Brigade[21] Col Charles W. Roberts |
| ||
3rd Brigade Col Henry S. Lansing[22] Col Henry A. Weeks (w) Col James C. Rice |
| |||
Sharpshooters | ||||
Artillery[24] |
| |||
Second Division BG George Sykes | 1st Brigade Ltc Robert C. Buchanan |
| ||
2nd Brigade Ltc William Chapman | ||||
3rd Brigade Col Gouverneur K. Warren | ||||
Artillery Cpt Stephen H. Weed |
|
See main article: IX Corps (Union Army). MG Jesse L. Reno
width=25% | Division | width=25% | Brigade | Regiments and Others |
---|---|---|---|---|
First Division BG Isaac I. Stevens | 1st Brigade Col Benjamin C. Christ |
| ||
2nd Brigade Col Daniel Leasure (w) Ltc David A. Leckey |
| |||
3rd Brigade Col Addison Farnsworth |
| |||
Artillery |
| |||
Second Division MG Jesse L. Reno[27] | 1st Brigade Col James Nagle |
| ||
2nd Brigade Col Edward Ferrero | ||||
Artillery |
|