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:
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