Second Corps, Army of Northern Virginia General Gustavus W. Smith. This unit was also known as the Second Division and was eventually subsumed into general Robert E. Lee's Army of Northern Virginia as a reserve in Maj. Gen. D. H. Hill's Division. When Lee was able to reorganize his army after finishing battles with Union Maj. Gen. George B. McClellan on the peninsula, he created this corps under the command of Lieutenant General Jackson, along with a sister corps under Lt. Gen. James Longstreet. Lee's reorganization was based on his evaluation of the performance of his division commanders during the Seven Days Campaign. General Jackson commanded
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