The Fourth Alabama Painting by Don Troiani

Orders of Battle, 21 July, 1861

McDowell's Army

Brigadier General I McDowell, United States Army

HEADQUARTERS

  • Second United States Cavalry, Company I Captain A G Brackett

FIRST DIVISION
Brigadier General D Tyler, Connecticut Volunteers

FIRST BRIGADE
Colonel E D Keyes, Eleventh United States Infantry

  • First Connecticut Infantry* Colonel G S Burnham
  • Second Connecticut Infantry* Colonel A H Terry
  • Third Connecticut Infantry* Colonel J L Chatfield
  • Second Maine Infantry Colonel C D Jameson
  • Varian's Light Artillery* Captain J M Varian

Note: Varian's Light Artillery, 8th New York State Militia Infantry, Company I, was discharged at Centreville, Fairfax County, Virginia, on 20 July, 1861, dated 17 July, 1861.

SECOND BRIGADE
Brigadier General R C Schenck, United States Volunteers

  • First Ohio Infantry* Colonel A McD McCook
  • Second Ohio Infantry* Lieutenant Colonel R Mason
  • Second New York State Militia Infantry Colonel G W B Tompkins
  • First United States Artillery, Light Company G (1 piece) Second Lieutenant P C Hains
  • Second United States Artillery, Light Company E (6 pieces) Captain J H Carlisle

Note: The 1st United States Artillery, Light Company G, was assigned to the Captain J H Carlisle, 2nd United States Artillery, Light Company E, at Centreville, Fairfax County, Virginia, on 20 July, 1861.

THIRD BRIGADE
Colonel W T Sherman, Thirteenth United States Infantry

  • Thirteenth New York Infantry Colonel I F Quinby
  • Sixty-ninth New York State Militia Infantry* Colonel M Corcoran
  • Seventy-ninth New York State Militia Infantry Colonel J Cameron
  • Second Wisconsin Infantry Lieutenant Colonel H W Peck I F Quinby
  • Third United States Artillery, Light Company E (6 pieces) Captain R B Ayres

FOURTH BRIGADE
Colonel I B Richardson, Second Michigan Infantry

  • Brethschneider's Battalion Light Infantry Captain G R Brethschneider
  • First Massachusetts Infantry Colonel R Cowdin
  • Second Michigan Infantry Major A W Williams
  • Third Michigan Infantry Colonel D McConnell
  • Twelfth New York Infantry Colonel E L Walrath
  • First United States Artillery, Light Company G (2 pieces) First Lieutenant J Edwards, Jr.
  • Second United States Artillery, Light Company M (4 pieces) Brevet Major & Captain H Hunt

Note: Brethschneider's Battalion Light Infantry, under the command of Captain G R Brethschneider, 2nd Michigan Infantry, Company E, was assigned to the Fourth Brigade, First Division, McDowell's Army, on 14 July, 1861.

SECOND DIVISION
Colonel D Hunter, Third United States Cavalry

  • Second United States Dragoons, Company K Captain F C Armstrong

FIRST BRIGADE
Colonel A Porter, Sixteenth United States Infantry

  • Eighth New York State Militia Infantry* (8 companies) Colonel G Lyons
  • Fourteenth New York State Militia Infantry (8 companies) Colonel A M Wood
  • Twenty-seventh New York Infantry Colonel H W Slocum
  • United States Battalion Infantry (8 companies) Major G Sykes
  • United States Marine Corps (4 companies) Major J G Reynolds
  • Fifth United States Artillery, Light Company D (6 pieces) Captain C Griffin
  • United States Battalion Cavalry (4 companies) Major I N Palmer

Note: Two companies of the 14th New York State Militia Infantry arrived at Arlington Heights, Fairfax County, Virginia, on 11 July, 1861, and were assigned to guard duty on 16 July, 1861.

SECOND BRIGADE
Colonel A E Burnside, First Rhode Island Detached Militia Infantry

  • Second New Hampshire Infantry Colonel G Marston
  • Seventy-first New York State Militia Infantry* (9 companies & 2 pieces) Colonel H P Martin
  • First Rhode Island Detached Militia Infantry* Lieutenant Colonel J S Pitman
  • Second Rhode Island Infantry* Lieutenant Colonel J S Slocum
  • Second Rhode Island Artillery (6 pieces) Captain W H Reynolds

THIRD DIVISION
Colonel S P Heintzelman, Seventeenth United States Infantry

  • Second United States Cavalry, Company E Captain W W Lowe

FIRST BRIGADE
Colonel W B Franklin, Twelfth United States Infantry

  • Fifth Massachusetts Infantry* Colonel S C Lawrence
  • Eleventh Massachusetts Infantry Colonel G Clark, Jr.
  • First Minnesota Infantry Colonel W A Gorman
  • Fourth Pennsylvania Infantry* Colonel J F Hartranft
  • First United States Artillery, Light Company I (6 pieces) Captain J B Ricketts

Note: The 4th Pennsylvania Infantry was discharged at Centreville, Fairfax County, Virginia, on 20 July, 1861, and Colonel J F Hartranft, 4th Pennsylvania Infantry, was assigned as a volunteer aide to Colonel W B Franklin, 12th United States Infantry, and Captain W H Cook, 4th Pennsylvania Infantry, Company K, to Colonel D Hunter, United States Mounted Riflemen, on 21 July, 1861.

SECOND BRIGADE
Colonel O B Willcox, First Michigan Infantry

  • First Michigan Infantry* Lieutenant Colonel L L Comstock
  • Fourth Michigan Infantry Colonel D A Woodbury
  • Eleventh New York Infantry Colonel N Farnham
  • Thirty-eighth New York Infantry Colonel J H Ward
  • Second United States Artillery, Light Company D (4 pieces) Captain R Arnold

THIRD BRIGADE
Colonel O O Howard, Third Maine Infantry

  • Third Maine Infantry Major H G Staples
  • Fourth Maine Infantry Colonel H G Berry
  • Fifth Maine Infantry Colonel H M Dunnell
  • Second Vermont Infantry Colonel H Whiting

FOURTH (RESERVE) DIVISION
Brigadier T Runyon, New Jersey Volunteers

MILITIA

  • First New Jersey Militia Infantry* Colonel A J Johnson
  • Second New Jersey Militia Infantry* Colonel H M Baker
  • Third New Jersey Militia Infantry* Colonel W Napton
  • Fourth New Jersey Militia Infantry* Colonel M Miller, Jr.

VOLUNTEERS

  • First New Jersey Infantry Colonel W R Montgomery
  • Second New Jersey Infantry Colonel G W McLean
  • Third New Jersey Infantry Colonel G W Taylor
  • Forty-first New York Infantry Colonel L Von Gisla

FIFTH DIVISION
Colonel D S Miles, Second United States Infantry

FIRST BRIGADE
Colonel L Blenker, Eighth New York Infantry

  • Eighth New York Infantry Lieutenant Colonel J Stahel
  • Twenty-ninth New York Infantry Colonel A Von Steinwehr
  • Thirty-ninth New York Infantry Colonel F G D'Utassy
  • Twenty-seventh Pennsylvania Infantry Colonel M Einstein
  • Second United States Artillery, Light Company A (4 pieces) Captain J C Tidball
  • Bookwood's Independent Light Artillery (6 pieces) Captain C Bookwood, Twenty-ninth New York Infantry, Company H

Note: Bookwood's Independent Light Artillery was assigned to the First Brigade, Fifth Division, McDowell's Army, at Centreville, Fairfax County, Virginia, in the morning on 21 July, 1861.

SECOND BRIGADE
Colonel T A Davis, Sixteenth New York Infantry

  • Sixteenth New York Infantry Lieutenant Colonel S Marsh
  • Eighteenth New York Infantry Colonel W A Jackson
  • Thirty-first New York Infantry Colonel C E Pratt
  • Thirty-second New York Infantry Colonel R Matheson
  • Second United States Artillery, Light Company G (4 pieces) First Lieutenant O D Greene

MCCUNN'S BRIGADE
Colonel J H McCunn, Thirty-seventh New York Infantry

  • Fifteenth New York Infantry Colonel J M Murphy
  • Twenty-fifth New York Infantry Colonel J E Kerrigan
  • Twenty-sixth New York Infantry Colonel W H Christian
  • Thirty-seventh New York Infantry Lieutenant Colonel J Burke

Note: McCunn's Brigade was temporarily assigned as support to the McDowell's Army at Washington, D. C., on 20 July, 1861.

UNASSIGNED
Brigadier T Runyon, New Jersey Volunteers

  • Seventeenth New York Infantry Colonel H F Lansig
  • Twenty-first New York Infantry Colonel W F Rogers
  • Twenty-fifth New York State Militia Infantry* Colonel M K Bryan
  • Twenty-eighth New York State Militia Infantry* Colonel M Bennett
  • Fortieth New York Infantry Colonel E J Riley
  • Fifth Pennsylvania Infantry* Colonel R P McDowell

*Mustered in United States service for three months' under the call for 75,000 troops to serve three months by President A Lincoln on 15 April, 1861.