Third Corps, Army of Northern Virginia Third Corps, Army of Northern Virginia The Third Corps, Army of Northern Virginia was a unit of the Provisional Army of the Confederate States. After the death of Lt. General Thomas J. Jackson at the Battle of Chancellorsville, Robert E. Lee reorganized his army from two infantry corps into three corps, giving command of the new Third Corps to A. P. Hill. For Hill's new corps, Lee assigned Hill's old "Light Division", commanded by Major General William Dorsey Pender, from the Second Corps and Richard H. Anderson's division from James Longstreet's First Corps. For the Corps' third division, Lee created
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