Joseph E. Johnston Joseph E. Johnston Joseph Eggleston Johnston (February 3, 1807 – March 21, 1891) was a career United States Army officer, serving with distinction in the Mexican–American War (1846–1848), and Seminole Wars. After Virginia seceded, he entered the Confederate States Army as one of the most senior general officers. (He was unrelated to Confederate general Albert Sidney Johnston, who was killed in early 1862.) Johnston was trained as a civil engineer at the United States Military Academy at West Point, New York, graduating in the same class as Robert E. Lee. He served in Florida, Texas, and Kansas. By 1860 he
Army of Northern Virginia artillery formed an Artillery Corps with 109 cannons. The Army of Northern Virginia was established on March 14, 1862, again under Johnston. Though the military department stayed existent its role changed into an administrative division for most of the war. At the outset of the Peninsula Campaign the Army of Northern Virginia had more than 55,633 soldiers. The cannon was assigned to the brigades, as well as the Reserve's artillery. Nominally, Jackson's Corps in the Shenandoah Valley, was subordinate to the Army. Since Jackson led his own campaign at the time of the Peninsula Campaign and was not under Lee's