Pope's army and such of the troops of the Army of the Potomac as had been involved in the catastrophe were driven, tired and disheartened, into the Washington lines.
When that state was reduced to order, the Potomac became the front, and, later, the base, of the Northern armies.
On the Potomac the Unionist generals McDowell and Patterson commanded respectively the forces at Washington and Harper's Ferry, opposed by the Confederates under Generals J.
The Southerners undeniably rested on their laurels, and enabled McClellan, who was now called to the chief military command at Washington, to raise, organize and train the famous Army of the Potomac, which, in defeat and victory, won its reputation as one of the finest armies of modern history.
McClellan and the Army of the Potomac faced Johnston, who with the Army of northern Virginia lay at Manassas, exercising and training his men with no less care than his opponent.