Five days afterward the President wrote: "I think Lee's army, and not
Richmond, is your true objective point. If he comes toward the Upper
Potomac, fight him when opportunity offers. If he stays where he is,
fret him and fret him."

When intelligence now reached Washington that the head of Lee's column was approaching the Upper Potomac, while the rear was south of the Rappahannock, the President wrote to General Hooker: "If the head of Lee's army is at Martinsburg, and the tail of it on the plank road between Fredericksburg and Chancellorsville, the animal must be very slim somewhere—could you not break him?"

General Hooker did not seem to be able to determine upon a decisive course of action, in spite of the tempting opening presented to him by Lee. It would seem that nothing could have been plainer than the good policy of an attack upon Hill at Fredericksburg, which would certainly have checked Lee's movement by recalling Longstreet from Culpepper, and Ewell from the Valley. But this bold operation did not appear to commend itself to the Federal authorities. Instead of reënforcing the corps sent across at Fredericksburg and attacking Hill, General Hooker withdrew the corps, on the 13th, to the north bank of the river, got his forces together, and began to fall back toward Manassas, and even remained in ignorance, it seems, of all connected with his adversary's movements. Even as late as the 17th of June, his chief-of-staff, General Butterfield, wrote to one of his officers; "Try and hunt up somebody from Pennsylvania who knows something, and has a cool enough head to judge what is the actual state of affairs there with regard to the enemy. My impression is, that Lee's movement on the Upper Potomac is a cover for a cavalry-raid on the south side of the river…. We cannot go boggling around until we know what we are going after."

Such was the first result of Lee's daring movement to transfer military operations to the region north of the Potomac. A Northern historian has discerned in his plan of campaign an amount of boldness which "seemed to imply a great contempt for his opponent." This is perhaps a somewhat exaggerated statement of the case. Without "boldness" a commander is but half a soldier, and it may be declared that a certain amount of that quality is absolutely essential to successful military operations. But the question is, Did Lee expose himself, by these movements of his army, to probable disaster, if his adversary—equal to the occasion—struck at his flank? A failure of the campaign of invasion would probably have resulted from such an attack either upon Hill at Fredericksburg, or upon Longstreet in Culpepper, inasmuch as Ewell's column, in that event, must have fallen back. But a defeat of the combined forces of Hill and Longstreet, who were within supporting distance of each other, was not an event which General Hooker could count upon with any degree of certainty. The two corps numbered nearly fifty thousand men—that is to say, two-thirds of the Southern army; General Hooker's whole force was but about eighty thousand; and it was not probable that the eighty thousand would be able to rout the fifty thousand, when at Chancellorsville less than this last number of Southerners had defeated one hundred and twenty thousand.

There seems little reason to doubt that General Lee took this view of the subject, and relied on Hill and Longstreet to unite and repulse any attack upon them, while Ewell's great "raiding column" drove forward into the heart of the enemy's territory. That the movement was bold, there can certainly be no question; that it was a reckless and hazardous operation, depending for its success, in Lee's eyes, solely on the supposed inefficiency of General Hooker, does not appear. These comments delay the narrative, but the subject is fruitful in suggestion. It may be pardoned a Southern writer if he lingers over this last great offensive movement of the Southern army. The last, it was also one of the greatest and most brilliant. The war, therefore, was to enter upon its second stage, in which the South was to simply maintain the defensive. But Lee was terminating the first stage of the contest by one of those great campaigns which project events and personages in bold relief from the broad canvas, and illumine the pages of history.

Events were now in rapid progress. Ewell's column—the sharp head of the Southern spear—reached Winchester on the 13th of June, and Rodes, who had been detached at Front Royal to drive the enemy from Berryville, reached the last-named village on the same day when the force there retreated to Winchester. On the next morning Early's division attacked the forces of Milroy at Winchester, stormed and captured their "Star Fort," on a hill near the place, and so complete was the rout of the enemy that their commander, General Milroy, had scarcely time to escape, with a handful of his men, in the direction of the Potomac.

For this disaster the unfortunate officer was harshly criticised by General Hooker, who wrote to his Government, "In my opinion, Milroy's men will fight better under a soldier."

After thus clearing the country around Winchester, Ewell advanced rapidly on Martinsburg, where he took a number of prisoners and some artillery. The captures in two days had been more than four thousand prisoners and twenty-nine cannon, with four hundred horses and a large amount of stores. Ewell continued then to advance, and, entering Maryland, sent a portion of his cavalry, under General Imboden, westward, to destroy the Baltimore and Ohio Railroad, and another body, under General Jenkins, in advance, toward Chambersburg. Meanwhile, the rest of the army was moving to join him. Hill, finding that the enemy had disappeared from his front near Fredericksburg, hastened to march from that vicinity, and was sent forward by Lee, on the track of Ewell, passing in rear of Longstreet, who had remained in Culpepper. The latter was now directed by Lee to move along the eastern side of the Blue Ridge, and, by occupying Ashby's and Snicker's Gaps, protect the flank of the column in the Valley from attack—a work in which Stuart's cavalry, thrown out toward the enemy, assisted.

Such was the posture of affairs when General Hooker's chief-of-staff became so much puzzled, and described the Federal army as "boggling around," and not knowing "what they were going after." Lee's whole movement, it appears, was regarded as a feint to "cover a cavalry-raid on the south side of the river"—a strange conclusion, it would seem, in reference to a movement of such magnitude. It now became absolutely necessary that Lee's designs should be unmasked, if possible; and to effect this object Stuart's cavalry force, covering the southern flank, east of the Blue Ridge, must be driven back. This was undertaken in a deliberate manner. Three corps of cavalry, with a division of infantry and a full supply of artillery, were sent forward from the vicinity of Manassas, to drive Stuart in on all the roads leading to the mountain. A fierce struggle followed, in which Stuart, who knew the importance of his position, fought the great force opposed to him from every hill and knoll. But he was forced back steadily, in spite of a determined resistance, and at Upperville a hand-to-hand sabre-fight wound up the movement, in which the Federal cavalry was checked, when Stuart fell back toward Paris, crowned the mountain-side with his cannon, and awaited a final attack. This was not, however, made. Night approaching, the Federal force fell back toward Manassas, and on the next morning Stuart followed them, on the same road over which he had so rapidly retreated, beyond Middleburg.

Lee paid little attention to these operations on his flank east of the mountains, but proceeded steadily, in personal command of his infantry, in the direction of the Cumberland Valley. Ewell was moving rapidly toward Harrisburg, with orders to "take" that place "if he deemed his force adequate,"[1] General Jenkins, commanding cavalry, preceding the advance of his infantry. He had thus pierced the enemy's territory, and it was necessary promptly to support him. Hill and Longstreet were accordingly directed to pass the Potomac at Shepherdstown and Williamsport. The columns united at Hagerstown, and on the 27th of June entered Chambersburg.