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 artillery formed an Artillery Corps with 109 cannons. The Army of Northern Virginia was established on March 14, 1862, again under Johnston. Though the military department stayed existent its role changed into an administrative division for most of the war. At the outset of the Peninsula Campaign the Army of Northern Virginia had more than 55,633 soldiers. The cannon was assigned to the brigades, as well as the Reserve's artillery. Nominally, Jackson's Corps in the Shenandoah Valley, was subordinate to the Army. Since Jackson led his own campaign at the time of the Peninsula Campaign and was not under Lee's