# First Battle of Bull Run order of battle: Union

The following units and commanders fought in the First Battle of Bull Run on the Union side. The Confederate order of battle is shown separately. Order of battle compiled from the army organization during the battle and the reports.

## Abbreviations used
### Military rank

* 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 Northeastern Virginia

BG Irvin McDowell, Commanding
General Staff:
* Chief of Artillery: Maj William F. Barry
* Chief Engineer: Maj John G. Barnard
* Chief Quartermaster: Cpt Otis H. Tillinghast (mw)
| Division | Brigade | Regiments and Others |
| First Division   BG Daniel Tyler | First Brigade   Col Erasmus D. Keyes | 1st Connecticut: Ltc John Speidel 2nd Connecticut: Col Alfred H. Terry 3rd Connecticut: Col John L. Chatfield 2nd Maine: Col Charles D. Jameson |
| First Division   BG Daniel Tyler | Second Brigade   BG Robert C. Schenck | 2nd New York (Militia): Col George W. B. Tompkins 1st Ohio: Col Alexander M. McCook 2nd Ohio: Ltc Rodney Mason 1st United States Artillery, Company G (Second Section): Lt Peter C. Hains 2nd United States Artillery, Company E: Cpt James H. Carlisle |
| First Division   BG Daniel Tyler | Third Brigade   Col William T. Sherman | 13th New York: Col Isaac F. Quinby 69th New York: Col Michael Corcoran (w&c), Cpt James Kelly 79th New York: Col James Cameron (k) 2nd Wisconsin: Ltc Henry W. Peck 3rd United States Artillery, Company E: Cpt Romeyn B. Ayres |
| First Division   BG Daniel Tyler | Fourth Brigade   Col Israel B. Richardson | 1st Massachusetts: Col Robert Cowdin 2nd Michigan: Maj Adolphus W. Williams 3rd Michigan: Col Daniel McConnell, Ltc Ambrose A. Stevens 12th New York: Col Ezra L. Walrath 1st United States Artillery, Company G (First Section): Lt John Edwards, Jr. 2nd United States Artillery, Company M: Cpt Henry J. Hunt |
| Second Division   Col David Hunter (w)   Col Andrew Porter | First Brigade   Col Andrew Porter | 8th New York (Militia): Col George Lyons 14th New York (Militia): Col Alfred M. Wood (w), Ltc Edward B. Fowler 27th New York: Col Henry W. Slocum (w), Maj Joseph J. Bartlett United States Infantry Battalion (8 companies): Maj George Sykes United States Marine Corps Battalion (4 companies): Maj John G. Reynolds United States Cavalry Battalion (7 companies): Maj Innis N. Palmer 5th United States Artillery, Company D: Cpt Charles Griffin |
| Second Division   Col David Hunter (w)   Col Andrew Porter | Second Brigade   Col Ambrose Burnside | 2nd New Hampshire: Col Gilman Marston (w), Ltc Frank S. Fiske 71st New York: Col Henry P. Martin 1st Rhode Island: Maj Joseph P. Balch 2nd Rhode Island: Col John S. Slocum (k), Ltc Frank Wheaton 2nd Rhode Island Battery: Cpt William H. Reynolds |
| Third Division   Col Samuel P. Heintzelman (w) | First Brigade   Col William B. Franklin | 5th Massachusetts: Col Samuel C. Lawrence (w) 11th Massachusetts: Col George Clark, Jr. 1st Minnesota: Col Willis A. Gorman 4th Pennsylvania (not present at battle): Col John F. Hartranft 1st United States Artillery, Battery I: Cpt James B. Ricketts (w/c), Lt Edmund Kirby |
| Third Division   Col Samuel P. Heintzelman (w) | Second Brigade   Col Orlando B. Willcox (w&c)   Col J. H. Hobart Ward | 1st Michigan: Maj Alonzo F. Bidwell 4th Michigan: Col Dwight A. Woodbury 11th New York: Col Noah L. Farnham (mw) 38th New York: Col J. H. Hobart Ward, Ltc Addison Farnsworth 2nd United States Artillery, Company D: Cpt Richard Arnold |
| Third Division   Col Samuel P. Heintzelman (w) | Third Brigade   Col Oliver O. Howard | 3rd Maine: Maj Henry G. Staples 4th Maine: Col Hiram G. Berry 5th Maine: Col Mark H. Dunnell 2nd Vermont: Col Henry Whiting |
| Fourth (Reserve) Division   BG Theodore Runyon | no brigade organization | 1st New Jersey Militia: Col Aldolphus J. Johnson 2nd New Jersey Militia: Col Henry M. Baker 3rd New Jersey Militia: Col William Napton 4th New Jersey Militia: Col Matthew Miller, Jr. 1st New Jersey: Col William R. Montgomery 2nd New Jersey: Col George W. McLean 3rd New Jersey: Col George W. Taylor 41st New York: Col Leopold von Gilsa |
| Fifth Division   Col Dixon S. Miles | First Brigade   Col Louis Blenker | 8th New York: Ltc Julius Stahel 29th New York: Col Adolph von Steinwehr 39th New York: Col Frederick G. D'Utassy 27th Pennsylvania: Col Max Einstein 2nd United States Artillery, Company A: Cpt John C. Tidball Brookwood's New York Battery: Cpt Charles Brookwood |
| Fifth Division   Col Dixon S. Miles | Second Brigade   Col Thomas A. Davies | 16th New York: Ltc Samuel Marsh 18th New York: Col William A. Jackson 31st New York: Col Calvin E. Pratt 32nd New York: Col Roderick N. Matheson 2nd United States Artillery, Company G: Lt Oliver D. Greene |