United States Army


< to June • July 1861to August >

Commanded by Brigadier General Irvin McDowell

The Battle of Bull Run, or Manassas, was fought on July 21.

1st Division

Brigadier General Daniel Tyler**  
First Brigade Colonel Erasmus Keyes  
1st Connecticut Infantry Regiment Lieutenant Colonel Speidel mustered out 7/31
2nd Connecticut Infantry Regiment Colonel A. H. Terry  
3rd Connecticut Infantry Regiment Colonel J. Chatfield  
2nd Maine Infantry Regiment Colonel C. D. Jameson  
Varian’s New York Battery Captain J. Varian mustered out 7/20
Second Brigade Brigadier General Robert C. Schenck*
2nd New York State Militia Colonel G. W. B. Tompkins  
New York Artillery, Battery B Captain Thaddeus P. Mott  
1st Ohio Infantry Regiment Colonel A. McCook return to Ohio to muster out 7/30
2nd Ohio Infantry Regiment Colonel L. Wilson
Lt. Colonel Rodney Mason
mustered out 7/31
2nd United States Artillery, Battery E Captain Carlisle  
Third Brigade Colonel W. T. Sherman  
13th New York Infantry Regiment Colonel Isaac F. Quinby  
69th New York State Militia Colonel Michael Corcoran (w/c 7/21)
Captain James Kelly
left for New York to muster out 7/27
79th New York Infantry Regiment Colonel J. Cameron (k 7/21)
Lieutenant Colonel S.M. Elliott
 
2nd Wisconsin Infantry Regiment Colonel P. S. Coon
Lieutenant Colonel Henry W. Peck
 
3rd United States Artillery, Battery E Captain Romeyn B. Ayers  
Fourth Brigade Colonel Israel Richardson  
1st Massachusetts Infantry Regiment Colonel R. Cowdin  
2nd Michigan Infantry Regiment Major A. W. Williams  
12th New York Infantry Regiment Colonel E. L. Walrath  
3rd Michigan Infantry Regiment Colonel D. McConnel
Lieutenant Colonel Stevens
 
1st United States Artillery, Battery G Lieutenant J. Edwards  
2nd United States Artillery, Battery M Captain H. J. Hunt  

2nd Division

Colonel David Hunter
First Brigade Colonel Andrew Porter  
8th New York State Militia Colonel G. Lyons to New York to muster out 7/23
14th New York State Militia Colonel A. M. Wood (w 7/21)
Lt. Colonel Edward B. Fowler
 
27th New York Infantry Regiment Colonel Henry W. Slocum (w 7/21)
Major Joseph J. Bartlett
Arrived from New York 7/17
35th New York Infantry Regiment Colonel A. M. Wood from Dist. Washington 7/27
2nd United States Infantry, Cos. C & K
3rd U.S., Cos. B, D, G, H & K
8th U. S., Co. G
Major George Sykes  
1st United States Cavalry, Cos. A & E
2nd U. S. Dragoons, Co. K
2nd U. S. Cavalry, Cos. B, E, G & I
Major I. N. Palmer  
United States Marine Battalion Major J. G. Reynolds  
Second Brigade Colonel Ambrose Burnside  
2nd New Hampshire Infantry Regiment Colonel Gilman Marston (w 7/21)
Lt. Colonel Frank S. Fiske
 
71st New York Infantry Regiment Colonel H. P. Martin left for New York to muster out 7/31
1st Rhode Island Infantry Regiment Major J. P. Balch left for Rhode Island to muster out 7/25
2nd Rhode Island Infantry Regiment Colonel J. S. Slocum (k 7/21)
Lt. Colonel F. Wheaton
 
1st Rhode Island Artillery, Battery A Captain William H. Reynolds  

3rd Division

Colonel Samuel P. Heintzelman
First Brigade Colonel William B. Franklin  
5th Massachusetts Infantry Regiment Colonel S. C. Lawrence (w 7/21) from Dept. Washington 7/16
to Boston to muster out 7/29
11th Massachusetts Infantry Regiment Colonel G. Clark  
1st Minnesota Infantry Regiment Colonel W. A. Gorman from Dept. Washington 7/3
4th Pennsylvania Infantry Regiment Colonel John Hartranft refused to extend service on eve of battle and mustered out 7/20
5th Pennsylvania Infantry Regiment Colonel R. P. McDowell remained at Alexandria during battle and mustered out at Harrisburg 7/25
1st United States Artillery, Battery I Captain J. B. Ricketts (w&c 7/21)
Lieutenant E. Kirby
 
Second Brigade Colonel Orlando B. Wilcox (w&c 7/21)
Colonel J. H. Hobart Ward
 
1st Michigan Infantry Regiment Major A. F. Bidwell  
4th Michigan Infantry Regiment Colonel D. A. Woodbury  
11th New York Infantry Regiment Colonel Noah L. Farnham (mw 7/21)
Lieutenant Colonel John A. Cregier
 
38th New York Infantry Regiment Colonel J. H. Ward (^ 7/21)
Lieutenant Colonel Addison Farnsworth
 
2nd United States Artillery, Battery D Captain Richard Arnold  
Third Brigade Colonel Oliver O. Howard  
3rd Maine Infantry Regiment Major H. G. Staples  
4th Maine Infantry Regiment Colonel H. G. Berry  
5th Maine Infantry Regiment Colonel M. H. Dunnell  
2nd Vermont Infantry Regiment Colonel H. Whiting  

4th Division

Brigadier General Theodore Runyon
First Brigade    
1st New Jersey State Militia Colonel Adolphus J. Johnson from Dist. Washington
2nd New Jersey State Militia Colonel Henry M. Baker from Dist. Washington
3rd New Jersey State Militia Colonel William Napton from Dist. Washington
4th New Jersey State Militia Colonel Matthew Miller, Jr. from Dist. Washington
Second Brigade
1st New Jersey Infantry Regiment Colonel William R. Montgomery from New Jersey 7/1
2nd New Jersey Infantry Regiment Colonel George W. McLean from New Jersey 7/1
3rd New Jersey Infantry Regiment Colonel George W. Taylor from New Jersey 7/1
41st New York Infantry Regiment Colonel Leopold Von Gilsa from New York 7/10

5th Division

Colonel Dixon S. Miles
First Brigade Colonel Louis Blenker  
8th New York Infantry Regiment Lieutenant Colonel J. Stahel  
29th New York Infantry Regiment Colonel Adolph Von Steinwehr  
39th New York Infantry Regiment Colonel Frederick G. D’Utassy  
27th Pennsylvania Infantry Regiment Colonel Max Einstein  from Dept. Washington
2nd United States Artillery, Battery A Captain J. C. Tidball  
Bookwood’s New York Battery Captain Charles Bookwood (29th NY) ***see note below
Second Brigade Colonel T. Davies  
16th New York Infantry Regiment Lieutenant Colonel S. Marsh  
18th New York Infantry Regiment Colonel William A. Jackson  
31st New York Infantry Regiment Colonel Calvin E. Pratt  
32nd New York Infantry Regiment Colonel Roderick Matheson  from New York 7/1
2nd United States Artillery, Battery G Lieutenant O. D. Greene  

*Commission in the United States Volunteers
**Commission in the militia
*** The guns of the Varian’s Battery (mustered out) were manned by men of the 8th and 29th New York on 7/21