First Battle of Bull Run
The First Battle of Bull Run is also known as the First Battle of Manassas and was the first major land battle of the Civil War fought on July 21, 1861 near Manassas, Virginia. Brig. Gen. Irvin McDowell advanced his Union Army troops across Bull Run against the Confederate Army under Brig. Gens. Joseph E. Johnston and P.G.T. Buearegard. The Union was forced to retreat back to Washington, D.C.