McDowell's headquartersManassas, July 8, 1862. General McDowell, who had been so unfortunate in the first great battle of the war, was made commander of the Third Corps of the newly created Army of Virginia under Pope. McDowell had his headquarters at Manassas. He moved southward during this month with Pope's army toward Gordonville. But Lee, by his brilliant and daring tactics, drove the Federal troops back until a three-days' battle was fought in the vicinity of the residence which the camera has preserved for us in this picture. McDowell once more had the chagrin of seeing a beaten army falling back on Washington.