First Corps, Army of Northern Virginia Tennessee and performed important forage service in Suffolk, Virginia. It was disbanded shortly following Gen. Robert E. Lee's surrender to Union forces on April 9, 1865. On June 1, 1862, Robert E. Lee took command of the Army of the Potomac following Johnston's wounding during Battle of Seven Pines, and shortly afterwards this army would be known as the Army of Northern Virginia. Lee re-organized the army as two "wings" (corps were not legally allowed by the Confederate Congress until September 18), with Lt. Gen. James Longstreet in charge of the Right Wing and Lt. Gen.Thomas J. "Stonewall" Jackson in
XI Corps (Union Army) Virginia. Col. Nathaniel McLean was promoted to brigadier general and succeeded Robert Schneck as commander of the 1st Division. During the fall months, the XI Corps occupied various outposts along the Potomac River and Northern Virginia. In December, it marched to Fredericksburg, but was not present at the battle, after which it went into winter quarters at Stafford, Virginia. With the ascension of Joseph Hooker to command of the army in February 1863, Franz Sigel was the second most senior officer in the ranks. Because of this and because the XI Corps was the smallest in the Army of the