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
Army of Northern Virginia previous name, the Confederate Army of the Potomac) from June 20 to July 20, 1861. His forces consisted of six brigades, with various militia and artillery from the former Department of Alexandria. During his command, Gen. Beauregard is noted for creating the battle flag of the army, which came to be the primary battle flag for all corps and forces under the Army of Northern Virginia. The flag was designed due to confusion during battle between the Confederate "Stars and Bars" flag and the flag of the United States. Beauregard continued commanding these troops as the new First Corps under