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 in the first six months from about 46,380 to 62,230 soldiers. The army was assigned in July to the Defense District of North Carolina and Richmond. In the course of the Richmond-Petersburg Campaign the number of soldiers temporarily grew to 82,633 while parts of the Army were under the command by Lieutenant General Early in Shenandoah Valley. In 1864 the Army of Northern Virginia fought against the more than twice as strong Potomac-, James- and Shenandoah Army in Grant's Overland Campaign, Early's Raid against the Baltimore and Ohio Railroad, the Richmond-Petersburg Campaign, and Shenandoah Campaign in the Shenandoah Valley. The