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
First Corps, Army of Northern Virginia charge of the Left Wing. With the authorization of corps later that year, the Right Wing was redesignated as the First Corps. At this time, Longstreet's corps contained twenty-one brigades organized into five divisions under major generals Lafayette McLaws, Richard H. Anderson, George E. Pickett, and John B. Hood, and Brigadier General Robert Ransom, Jr. Note: see Fredericksburg order of battle for the command structure of the Army of Northern Virginia at this time. The Battle of Fredericksburg was fought in and around Fredericksburg, Virginia, starting on December 11 and concluding December 15, 1862, between Lee's Army of Northern Virginia