would cut the Confederate rail communication with the Shenandoah Valley and so prevent all chance of immediate concentration at Bull Run. Johnston saw that the hour had come. It could not have come before, as Lee and the rest had foreseen; because an earlier concentration at Bull Run would have drawn the two superior Federal forces together on the selfsame spot. There was still some risk about giving Patterson the slip. True, his three-month special-constable array was semi-mutinous already; and its term of service had only a few more days to run. True, also, that the men had cause for grievance. They were all without pay, and some of them were reported as being still "without pants." But, despite such drawbacks, a resolute attack by Patterson's fourteen thousand could have at least held fast Johnston's eleven thousand, who were mostly little better off in military ways. Patterson, however, suffered from distracting orders, and that was his undoing. Johnston, admirably screened by Stuart, drew quietly away, leaving his sick at Winchester and raising the spirits of his whole command by telling them that Beauregard was in danger and that they were to "make a forced march to save the country."

Straining every nerve they stepped out gallantly and covered mile after mile till they reached the Shenandoah, forded it, and crossed the Blue Ridge at Ashby's Gap. But lack of training and march discipline told increasingly against them. "The discouragement of that day's march," said Johnston, "is indescribable. Frequent and unreasonable delays caused so slow a rate of marching as to make me despair of joining General Beauregard in time to aid him." Even the First Brigade, with all the advantages of leading the march and of having learnt the rudiments of drill and discipline, was exhausted by a day's work that it could have romped through later on. Jackson himself stood guard alone till dawn while all his soldiers slept.

As Jackson's men marched down to take the train at Piedmont, Stuart gayly trotted past, having left Patterson still in ignorance that Johnston's force had gone. By four in the afternoon of the nineteenth Jackson was detraining at Manassas. But, as we shall presently see, it was nearly two whole days before the last of Johnston's brigades arrived, just in time for the crisis of the battle. When Johnston had joined Beauregard their united effective total was thirty thousand men. There had been a wastage of three thousand. McDowell also had no more than thirty thousand effectives present on the twenty-first; for he left one division at Centreville and lost the rest by straggling and by the way in which the battery and battalion already mentioned had "claimed their discharge" at Blackburn's Ford. Throughout the nineteenth and twentieth, while, sorely against his will, the Federals were having their "monster military picnic" at Centreville, he was reconnoitering his constantly increasing enemy under the greatest difficulties, with his ill-trained staff, bad maps, and lack of proper guides.

Lee had chosen six miles of Bull Run as a good defensive position. But Beauregard intended to attack, hoping to profit by the Federal disjointedness. Consequently none of the eight fords were strongly defended except at Union Mills on the extreme right and the Stone Bridge on the extreme left, where the turnpike from Centreville to Warrenton crossed the Run. Bull Run itself was a considerable obstacle, having fairly high banks and running along the Confederate front like the ditch of a fortress. Three miles in rear stood Manassas Junction on a moderate plateau intersected by several creeks. The most important of these creeks, Young's Branch, joined Bull Run on the extreme left, near the Stone Bridge and Warrenton turnpike, after flowing through the little valley between the Henry Hill and Matthews Hill. Three miles in front, across Bull Run, stood Centreville, the Federal camp and field base during the battle.

Sunday, July 21, 1861, was a beautiful midsummer day. Both armies were stirring soon after dawn. But a miscarriage of orders delayed the Confederate offensive so much that the initiative of attack passed to the Federals, who advanced against the Stone Bridge shortly after six. This attack, however, though made by a whole division against a single small brigade, was immediately recognized as a mere feint when, two hours later, Evans, commanding the Confederate brigade, saw dense clouds of dust rising above the woods on his left front, where the road crossed Sudley Springs, nearly two miles beyond his own left. Perceiving that this new development must be a regular attempt to turn the whole Confederate left by crossing Bull Run, he sent back word to Beauregard, posted some men to hold the Stone Bridge, and marched the rest to crown the Matthews Hill, facing Sudley Springs a mile away. Meanwhile four of "Joe" Johnston's five Shenandoah brigades—Bee's, Bartow's, Bonham's, and Jackson's—had been coming over from the right reserve to strengthen Evans at the Bridge. As the great Federal turning movement developed against the Confederate left these brigades followed Evans and were themselves followed by other troops, till the real battle raged not along Bull Run but across the Matthews Hill and Henry Hill.

Forming the new front at right angles to the old, so as to attack and defend the Confederate left on the Matthews and Henry Hills, caused much confusion on both sides; but more on the Federal, as the Confederates knew the ground better. By eleven Bee had reached Evans and sent word back to hurry Bartow on. But the Federals, having double numbers and a great preponderance in guns, soon drove the Confederates off the Matthews Hill. As the Confederates recrossed Young's Branch and climbed the Henry Hill the regular artillery of the Federals limbered up smartly, galloped across the Matthews Hill, and from its nearer slope plied the retreating Confederates on the opposite slope with admirably served shell. Under this fire the raw Confederates ran in confusion, while their uncovered guns galloped back to find a new position.