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 Burnside's Bridge proved to be too much for Lee and his Confederate army. Luckily for Lee, the arrival of A.P. Hill's troops and the mixture of McClellan's and Burnside's sluggishness, saved Lee's Army of Northern Virginia and allowed them to barely hold off the Union in Maryland. Although the Army of Northern Virginia swelled and shrank over time, its units of organization consisted primarily of corps, earlier referred to as "wings" or "commands": The Army fought in a number of campaigns and battles, including: On April 9, 1865, the Army of Northern Virginia surrendered to the Army of the Potomac