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
Troop engagements of the American Civil War, 1862 was transported to Fort Monroe in April to begin an offensive against Richmond, Virginia. Convinced that he was outnumbered by the Confederate Army of Northern Virginia, commanded by General Joseph E. Johnston, McClellan advanced cautiously, taking nearly a month to capture the Confederate defensive works near Yorktown and an additional month to march westward and arrive just outside Richmond. Here on May 31, Johnston attacked an isolated portion of the Union army in the Battle of Seven Pines; Johnston's plan failed, due to uncoordinated attacks and to Confederate columns which failed to arrive at their assigned positions, and Johnston was