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
Fourth Corps, Army of Northern Virginia Fourth Corps, Army of Northern Virginia The Fourth Corps was a military unit formed in October 1864 within the Army of Northern Virginia of the Confederate Army. It fought for the Confederate States of America during the late stages of the American Civil War. The corps was commanded by Richard H. Anderson during its short life and was combined with the Second Corps shortly before Lee's surrender on April 9, 1865. With the recovery of Lt. General James Longstreet from injury, which allowed him to resume leading the First Corps, a new Fourth Corps was created on October 19, 1864.