Army of Virginia in the Army of the Potomac. They were redesignated as shown for the Maryland Campaign and later. The following corps were attached for operations during the Northern Virginia Campaign: Army of Virginia The Army of Virginia was organized as a major unit of the Union Army and operated briefly and unsuccessfully in 1862 in the American Civil War. It should not be confused with its principal opponent, the Confederate Army of "Northern" Virginia, commanded by Robert E. Lee. The Army of Virginia was constituted on June 26, 1862, by General Orders Number 103, from four existing departments operating around Virginia:
Army of Northern Virginia campaign. The army was also joined for the Northern Virginia and Maryland Campaigns by Nathan G. Evans's independent South Carolina brigade and a North Carolina brigade led by Brig. Gen Thomas Drayton. During the Maryland Campaign, D.H. Hill rejoined the main army along with Lafayette McLaws. Kemper's division was merged with the division of David R. Jones, a more senior, experienced officer, and Kemper reverted to brigade command. In addition, Robert Ransom commanded two brigades from the Department of North Carolina. At Antietam, Longstreet commanded the divisions of Anderson, McLaws, Jones, Hood, and Ransom while Jackson had the divisions of