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
Cavalry Corps, Army of Northern Virginia cavalry in the Eastern Theater was limited to regiments or smaller units attached to districts or larger formations. Noteworthy were Stuart's 1st Virginia Cavalry, the 30th Virginia Cavalry and Hampton's Legion from South Carolina. Recommendations and endorsements from Generals P.G.T. Beauregard, Joseph E. Johnston and James Longstreet led to a promotion to Brigadier General for Stuart in September 1861; and the formation of a unified cavalry brigade under his command. On August 17, 1862 the cavalry division was built – swollen to four brigades in less than a year. On September 9, 1863 the Cavalry Corps was finally established with