The Fourth Alabama Painting by Don Troiani

Orders of Battle, 10 June-23 July, 1861

Army of Pennsylvania

Major General R Patterson, Pennsylvania Volunteers

FIRST DIVISION
Acting Major General & Brigadier General G Cadwallader, Pennsylvania Volunteers

FIRST BRIGADE
Colonel G H Thomas, Second United States Cavalry

  • First Rhode Island Detached Militia Infantry* Colonel A E Burnside
  • Sixth Pennsylvania Infantry* Colonel J Nagle
  • Twenty-first Pennsylvania Infantry* Colonel J F Ballier
  • Twenty-third Pennsylvania Infantry* - Colonel C P Dare
  • Doubleday's Battalion Infantry, (4 companies) Major A Doubleday
  • First Rhode Island Detached Militia Artillery*, (6 pieces) Captain C H Tompkins
  • Fourth United States Artillery, Light Company F Captain D D Perkins
  • Philadelphia City Cavalry, First Troop* Captain T C James
  • Second United States Cavalry, Companies A, C, F, & K Captain R W Johnson

Note: The 1st Rhode Island Detached Militia Infantry and the 1st Rhode Island Detached Militia Artillery or Providence Marine Corps Artillery were assigned to the First Brigade, First Division, Army of Pennsylvania, on 11 June, 1861, and were ordered to Washington, D. C., on 17 June, 1861. The 1st United States Artillery, Companies E and H, were assigned to Doubleday's Heavy Artillery on 15 June, 1861, and the 8th United States Infantry, Company G, was ordered to Washington, D. C., on 18 June, 1861. The 4th United States Artillery, Light Company F, was assigned to the First Brigade, First Division, Army of Pennsylvania, at Downsville, Washington County, Maryland, on 30 June, 1861, and the 1st Rhode Island Detached Militia Artillery arrived at Martinsburg, Berkeley County, Virginia, at 5 PM on 4 July, 1861.

THIRD BRIGADE
Brigadier General E A Williams, Pennsylvania Volunteers

  • Seventh Pennsylvania Infantry* Colonel W H Irwin
  • Eighth Pennsylvania Infantry* Colonel A H Emley
  • Tenth Pennsylvania Infantry* Colonel S A Meredith
  • Twentieth Pennsylvania Infantry* Colonel W H Gray

FOURTH BRIGADE
Colonel D S Miles, Second United States Infantry

  • Ninth Pennsylvania Infantry* Colonel H C Longnecker
  • Thirteenth Pennsylvania Infantry* Colonel T A Rowley
  • Sixteenth Pennsylvania Infantry* Colonel T A Ziegle
  • United States Battalion Infantry, (7 companies) Major O L Shepperd

Note: The United States Battalion Infantry and Colonel D S Miles were ordered to Washington, D. C., on 18 June, 1861, and Colonel H C Longnecker, 9th Pennsylvania Infantry, was assigned to command the Fourth Brigade, First Division, Army of Pennsylvania, on 17 June, 1861.

SECOND DIVISION
Major General W H Keim, Pennsylvania Volunteers

SECOND BRIGADE
Brigadier General G C Wynkoop, Pennsylvania Volunteers

  • First Pennsylvania Infantry* Colonel S Yohe
  • Second Pennsylvania Infantry* Colonel F S Stumbaugh
  • Third Pennsylvania Infantry* Colonel F P Minier
  • Twenty-fourth Pennsylvania Infantry* Colonel J T Owen

Note: The 24th Pennsylvania Infantry was assigned to the Second Brigade, Second Division, Army of Pennsylvania, on 10 June, 1861, and to the Fifth Brigade, Second Division, Army of Pennsylvania, on 21 June, 1861.

FIFTH BRIGADE
Brigadier General J S Negley, Pennsylvania Volunteers

  • Fourteenth Pennsylvania Infantry* Colonel J W Johnston
  • Fifteenth Pennsylvania Infantry* Colonel R A Oakford
  • Twenty-fourth Pennsylvania Infantry* Colonel J T Owen
  • Ninth New York State Militia Infantry, Company K Captain T B Bunting

Note: The 24th Pennsylvania Infantry was assigned to the Fifth Brigade, Second Division, Army of Pennsylvania, on 21 June, 1861, and the 9th New York State Militia Infantry, Company K, on 10 July, 1861. The 9th New York State Militia Infantry, Company K, was assigned to the Seventh Brigade, Third Division, Army of Pennsylvania, on 24 July, 1861.

SIXTH BRIGADE
Colonel J J Abercrombie, Seventh United States Infantry

  • Eleventh Pennsylvania Infantry* Colonel P Jarrett
  • First Wisconsin Infantry* Colonel J C Starkweather
  • Fourth Connecticut Infantry (First Connecticut Heavy Artillery) Colonel L Woodhouse
  • Second Massachusetts Infantry Colonel G H Gordon

Note: The 2nd Massachusetts Infantry was assigned to the Sixth Brigade, Second Division, Army of Pennsylvania, by Special Orders No.105, Headquarters, Department of Pennsylvania, Martinsburg, Berkeley County, Virginia, on 14 July, 1861.

THIRD DIVISION
Major General C W Sandford, New York State Militia

SEVENTH BRIGADE
Colonel C P Stone, Fourteenth United States Infantry

  • First New Hampshire Infantry* Colonel M Tappan
  • Seventeenth Pennsylvania Infantry* Colonel F E Patterson
  • Twenty-fifth Pennsylvania Infantry*, (5 companies) Colonel H L Cake
  • Ninth New York State Militia Infantry Colonel J W Stiles
  • Third District of Columbia Militia Infantry, Detachment Acting Major & Captain J R Smead

Note: The Seventh Brigade, Third Division, Army of Pennsylvania, was assigned to Colonel C P Stone, 14th United States Infantry, by Special Orders No.96, Paragragh I, Headquarters, Department of Pennsylvania, Martinsburg, Berkeley County, Virginia, on 10 July, 1861.

EIGHTH BRIGADE
Acting Brigadier General & Colonel D Butterfield, Twelfth New York State Militia Infantry

  • Fifth New York State Militia Infantry* Colonel C Schwarzwaelder
  • Twelfth New York State Militia Infantry* Lieutenant Colonel W G Ward
  • Nineteenth New York Infantry Colonel J S Clark
  • Twenty-eighth New York Infantry Colonel D Donnelly

Note: The Eighth Brigade, Third Division, Army of Pennsylvania, was assigned to Acting Brigadier General & Colonel D Butterfield, Twelfth New York State Militia Infantry, by Special Orders No.96, Paragragh I, Headquarters, Department of Pennsylvania, Martinsburg, Berkeley County, Virginia, on 10 July, 1861.

UNASSIGNED

  • Eleventh Indiana Infantry* Colonel C Wallcae

*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.