General in Chief Henry Wager Halleck had promoted John Pope to major general and based on his successful exploits in the Western Theater, he was given command of a new Union armt, namely the Army of Virginia. Halleck had formed the new army by combining forces from the departments of the Mountain, Shenandoah, Rappahannock and from troops in the Military district of Washington. This new army located in Northern Virginia and McClellan's Army of the Potomac, caused General Lee and Jefferson Davis great concern. These forces could combine into one huge Union army or attack Richmond from the north and from the peninsula, as McClellan's troops were still stationed at Harrison's Landing
Army of Tennessee was created in 1862.
Army of Northern Virginia (1861-1862),
On August 8, 1862, John Pope's Army of Virginia was positioned in Virginia. Although Stonewall Jackson was able to assault Pope and reduce his army, it was not enough to prevent Pope from remaining a threat to Richmond.
Robert E. Lee
The first name of what would become the Army of Northern Virginia was the Confederate Army of the Potomac. That was in 1861. As early 1862 came about the name was changed to the Army of Northern Virginia.
VII Corps - Union Army - was created in 1862.
XII Corps - Union Army - was created in 1862.
XVIII Corps - Union Army - was created in 1862.
VIII Corps - Union Army - was created in 1862.
VI Corps - Union Army - was created in 1862.
York U.S. Army Hospital was created in 1862.
Fredericksburg, in Virginia. December, 1862.