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
Second Corps, Army of Northern Virginia what became the Second Corps from the end of the Seven Days Campaign on July 13, 1862, until his death after the Battle of Chancellorsville in May 1863. Jackson's official promotion to lieutenant general was made on October 10, 1862, and "Jackson's Corps" began going by the title Second Corp about 6 November. Jackson simultaneously commanded the "Valley District" of the Department of Northern Virginia, and operated his corps near Winchester, Virginia, guarding the lower Shenandoah Valley when not fully needed by Lee to be close at hand to the main army. Jackson commanded the corps at the Battle of