Editing Second Battle of Bull Run (section)

===Union===
{{further|Second Bull Run Union order of battle}}

{| class=wikitable
!bgcolor="#99ccff"|'''Key commanders''' ([[Second Bull Run Union order of battle|Union Forces]])
|-
|<gallery mode="packed" heights="160" style="text-align:center; margin: 0px;">
File:John Pope standing.jpg|{{center|Maj. Gen.<br />[[John Pope (general)|John Pope]], [[Army of Virginia]] ('''Commanding'''), USA}}
File:Franz Sigel.jpg|{{center|Maj. Gen.<br />[[Franz Sigel]] (''I Corps'', [[Army of Virginia]]), USA}}
File:GenNPBanks.jpg|{{center|Maj. Gen.<br />[[Nathaniel P. Banks]] (''II Corps'', [[Army of Virginia]]), USA}}
File:Irv mcdowell.jpg|{{center|Maj. Gen.<br />[[Irvin McDowell]] (''III Corps'', [[Army of Virginia]]), USA}}
File:Samuel P. Heintzelman - Brady-Handy.jpg|{{center|Maj. Gen.<br />[[Samuel P. Heintzelman]] (''III Corps'', [[Army of the Potomac]]), USA}}
File:JLReno.jpg|{{center|Maj. Gen.<br />[[Jesse L. Reno]] (''IX Corps'', [[Army of the Potomac]]), USA}}
</gallery>
|}

Gen. [[John Pope (general)|Pope]]'s [[Army of Virginia]] of approximately 51,000 men was divided into three army corps:

The [[I Corps (Union Army)|I Corps]], under Maj. Gen. [[Franz Sigel]] consisted of the divisions of:{{citation needed|date=August 2022}}
*Brig Gen. [[Robert C. Schenck]] (brigades of Brig Gen. [[Julius Stahel]] and Col. [[Nathaniel C. McLean]]).
*Brig Gen. [[Adolph von Steinwehr]] (brigade of Col. [[John A. Koltes]]).
*Brig Gen. [[Carl Schurz]] (brigades of Col. [[Alexander Schimmelfennig]] and Col. [[Wlodzimierz Krzyzanowski]]).
*Independent Brigades of Brig Gen. [[Robert H. Milroy]], Col. [[John Beardsley (colonel)|John Beardsley]], and Cpt. [[Louis Schirmer]])

The [[II Corps (Union Army)|II Corps]], under Maj. Gen. [[Nathaniel P. Banks]]

The [[III Corps (Union Army)|III Corps]], Maj. Gen. [[Irvin McDowell]], who had led the losing Union army at First Bull Run, consisted of the divisions of:{{citation needed|date=August 2022}}
*Brig Gen. [[Rufus King (general)|Rufus King]] (brigades of Brig Gen. [[John P. Hatch]], Brig Gen. [[Abner Doubleday]], Brig Gen. [[Marsena R. Patrick]], and Brig Gen. [[John Gibbon]])
*Brig Gen. [[James B. Ricketts]] (brigades of Brig Gen. [[Abram Duryée]], Brig Gen. [[Zealous B. Tower]], Col. [[John W. Stiles]], and Col. [[Joseph Thoburn]])

The [[Kanawha Division]] (detachment) and parts of three army corps of Gen. [[George B. McClellan|McClellan]]'s [[Army of the Potomac]], eventually joined Pope for combat operations, raising his strength to 77,000:<ref name=UFstrength>Martin, p. 280; Eicher, p. 318; Hennessy, p. 6.</ref>

The [[III Corps (Union Army)|III Corps]], under Maj. Gen. [[Samuel P. Heintzelman]], consisted of the divisions of:{{citation needed|date=August 2022}}
*Maj. Gen. [[Philip Kearny]] (brigades of Brig Gen. [[John C. Robinson]], Brig Gen. [[David B. Birney]], Col. [[Orlando Poe]])
*Maj. Gen. [[Joseph Hooker]] (brigades of Col. [[Cuvier Grover]], Col. [[Nelson Taylor]], and Col. [[Joseph B. Carr]])

The [[V Corps (Union Army)|V Corps]] under Maj. Gen. [[Fitz John Porter]], consisted of the divisions of:{{citation needed|date=August 2022}}
*Brig Gen. [[Daniel Butterfield]] (brigades of Col. [[Charles W. Roberts]] and Col. [[Henry S. Lansing]])
*Brig Gen. [[George Sykes]] (brigades of Brig. Gen. [[Abram S. Piatt]], Lt. Col. [[Robert C. Buchanan]], Lt. Col. [[William Chapman (colonel)|William Chapman]], Col. [[Gouverneur K. Warren]], and Cpt. [[Stephen H. Weed]])

The [[VI Corps (Union Army)|VI Corps]] under Maj. Gen. [[William B. Franklin]]<ref name =VIAC/>

The [[IX Corps (Union Army)|IX Corps]] under Maj. Gen. [[Jesse L. Reno]], consisted of the divisions of:
*Brig Gen. [[Isaac I. Stevens]] (brigades of Col. [[Benjamin C. Christ]], Col. [[Daniel Leasure]] and Col. [[Addison Farnsworth]])
*Maj. Gen. Jesse L. Reno (brigades of Col. [[James Nagle (general)|James Nagle]] and Col. [[Edward Ferrero]])