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
Joseph E. Johnston of Davis's counterargument was that Johnston's U.S. commission as a brigadier general was as a staff officer and that his highest line commission was as a lieutenant colonel; both Sidney Johnston and Lee had been full colonels. Johnston sent an intemperately worded letter to Davis, who was offended enough to discuss its tone with his cabinet. Johnston was placed in command of the Department of the Potomac and the Confederate Army of the Potomac on July 21, 1861, and the Department of Northern Virginia on October 22. From July to November 1861, he was headquartered at the Conner House in