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 The Department comprised three districts: Aquia District, Potomac District, and the Valley District. In April 1862, the Department was expanded to include the Departments of Norfolk and the Peninsula (of Virginia). Gen. Johnston was eventually forced into maneuvering the Army southward to the defenses of Richmond during the opening of the Peninsula Campaign, where it conducted delay and defend tactics until Johnston was severely wounded at the Battle of Seven Pines. During the months after the First Battle of Bull Run, Johnston organized his Shenandoah Army and Beauregard's Potomac Army into two divisions under a unified command with Gustavus Smith