Army of Northern Virginia 20 and July 21, the Army of the Shenandoah and forces from the District of Harpers Ferry were added. Units from the Army of the Northwest were merged into the Army of the Potomac between March 14 and May 17, 1862. The Army of the Potomac was renamed "Army of Northern Virginia" on March 14. The Army of the Peninsula was merged into it on April 12, 1862. Robert E. Lee's biographer, Douglas S. Freeman, asserts that the army received its final name from Lee when he issued orders assuming command on June 1, 1862. However, Freeman does admit that
Army of Northern Virginia and James Longstreet as division commanders. Beauregard quarreled with Johnston and was transferred to the Western theater over the winter months. Jackson was sent to the Shenandoah Valley in October 1861, initially with his own old Stonewall Brigade and later with two other brigades from Western Virginia. Several newly arrived brigades were added to Johnston's army in late 1861-early 1862. When the Peninsula Campaign began, Johnston took his army down to the Richmond environs where it was merged with several smaller Confederate commands, including a division led by D.H. Hill as well as Benjamin Huger's Department of Norfolk, John Magruder's