Army of the Potomac (afterwards known as First Corps), under Brig.Gen. G. T. Beauregard:--Infantry: First Brigade, under Brig.-Gen. M. S. Bonham, 11th North Carolina, 2d, 3d, 7th, and 8th South Carolina; Second Brigade, Brig.-Gen. R. S. Ewell, 5th and 6th Alabama, 6th Louisiana; Third Brigade, Brig.-Gen. D. R. Jones, 17th and 18th Mississippi, 5th South Carolina; Fourth Brigade, Brig.-Gen. James Longstreet, 5th North Carolina, 1st, 11th, and 17th Virginia; Fifth Brigade, Col. O. St. George Cocke, 1st Louisiana Battalion, 8th Virginia (seven companies), 18th, 19th, 28th, and 49th (three companies) Virginia; Sixth Brigade, Col. J. A. Early, 13th Mississippi, 4th South Carolina, 7th and 24th Virginia; Troops not brigaded : 7th and 8th Louisiana, Hampton Legion, South Carolina, 30th Virginia (cavalry), Harrison's Battalion (cavalry); Independant companies : 10th Cavalry, Washington (Louisiana) Cavalary; Artillery: Kemper's, Latham's, Loudoun, and Shield's batteries, Camp Pickens companies.
Army of the Shenandoah (Johnston's Division), Brig.-Gen. Joseph E. Johnston :-- First Brigade, Col. T. J. Jackson, 2d, 4th, 5th, and 27th Virginia, Pendleton's Battery; Second Brigade, Col. F. S. Bartow, 7th, 8th, and 9th Georgia, Duncan's and Pope's Kentucky Battalions, Alburti's Battery; Third Brigade, Brig.-Gen. Barnard E. Bee, 4th Alabama, 2d and 11th Mississippi, 1st Tennessee, Imboden's Battery; Fourth Brigade Col. A. Elzey, 1st Maryland Battalion, 3d Tennessee, 10th and 13th Virginia, Grane's Battery; Not brigaded : 1st Virginia Cavalry, 33d Virginia Infantry.
Source: Official Records
Commentary
Organization of the Confederate Army during 1st Manassas: