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 the Peninsula by Magruder, now major general. In April 1862 Magruder's army was incorporated into the right wing of the larger army of Joseph E. Johnston, preparing defenses against an expected attack by George B. McClellan in what would become the Peninsula Campaign. While the army designation ceased to exist, Magruder's army's independence and initiative was instrumental in preventing McClellan from rapidly advancing on Richmond. Army of the Peninsula The Army of the Peninsula or Magruder's Army was a Confederate army early in the American Civil War. In May 1861, Colonel John B. Magruder was assigned to command operations on the lower