The question now to be decided was which wing should be attacked first. There was much to be said in favour of crushing Sedgwick. His numbers were estimated at 35,000 men, and the Confederates had over 60,000. Moreover, time is a most important consideration in the use of interior lines. The army was already concentrated in front of Sedgwick, whereas it would require a day’s march to seek Hooker in the forest round Chancellorsville. Sedgwick’s, too, was the smaller of the Federal wings, and his overthrow would certainly ruin Hooker’s combinations. “Jackson at first,” said Lee, “preferred to attack Sedgwick’s force in the plain of Fredericksburg, but I told him I feared it was as impracticable as it was at the first battle of Fredericksburg. It was hard to get at the enemy, and harder to get away if we drove him into the river, but if he thought it could be done, I would give orders for it.” Jackson asked to be allowed to examine the ground, but soon came to the conclusion that the project was too hazardous and that Lee was right. Orders were then issued for a concentration against Hooker, 10,000 men, under General Early, remaining to confront Sedgwick on the heights of Fredericksburg.

We may now turn to the movements of the Federals.

Hooker’s right wing had marched at a speed which had been hitherto unknown in the Army of the Potomac. At nightfall, on April 30, the three army corps, although they had been delayed by the Confederate cavalry, were assembled at Chancellorsville. In three days they had marched forty-six miles over bad roads, had forded breast-high two difficult rivers, established several bridges, and captured over a hundred prisoners.[[18]] Heavy reinforcements were in rear. The two divisions of the Second Corps had marched from Banks’ Ford to United States Ford, six miles from Chancellorsville; while the Third Corps, ordered up from the Stafford Heights, was rapidly approaching the same point of passage. Thus, 70,000 men, in the highest spirits at the success of their manœuvres, were massed in rear of Lee’s lines, and Hooker saw victory within his grasp.

“It is with heartfelt satisfaction,” ran his general order, “that the commanding general announces to his army that the operations of the last three days have determined that our enemy must either ingloriously fly or come out from behind his defences, and give us battle on our own ground, where certain destruction awaits him. The operations of the Fifth, Eleventh, and Twelfth Corps have been a succession of splendid achievements.”

Hooker was skinning the lion while the beast yet lived, but he had certainly much reason for congratulation. His manœuvres had been skilfully planned and energetically executed. The two rivers which protected the Confederate position had been crossed without loss; the Second and Third Corps had been brought into close touch with the right wing; Lee’s earthworks were completely turned, and Stoneman’s cavalry divisions, driving the enemy’s patrols before them, were already within reach of Orange Court House, and not more than twenty miles from Gordonsville. Best of all, the interval between the two wings—twenty-six miles on the night of the 28th—was now reduced to eleven miles by the plank road.

Two things only were unsatisfactory:—

1. The absence of information.

2. The fact that the whole movement had been observed by the Confederate cavalry.

Pleasonton’s brigade of horse had proved too weak for the duty assigned to it. It had been able to protect the front, but it was too small to cover the flanks; and at the flanks Stuart had persistently struck. Hooker appears to have believed that Stoneman’s advance against the Central Railroad would draw off the whole of the Confederate horse. Stuart, however, was not to be beguiled from his proper functions. Never were his squadrons more skilfully handled than in this campaign. With fine tactical insight, as soon as the great movement on Chancellorsville became pronounced, he had attacked the right flank of the Federal columns with Fitzhugh Lee’s brigade, leaving only the two regiments under W. H. F. Lee to watch Stoneman’s 10,000 sabres. Then, having obtained the information he required, he moved across the Federal front, and routing one of Pleasonton’s regiments in a night affair near Spotsylvania Court House, he had regained touch with his own army. The results of his manœuvres were of the utmost importance. Lee was fully informed as to his adversary’s strength; the Confederate cavalry was in superior strength at the critical point, that is, along the front of the two armies; and Hooker had no knowledge whatever of what was going on in the space between Sedgwick and himself. He was only aware, on the night of April 30, that the Confederate position before Fredericksburg was still strongly occupied.

The want, however, of accurate information gave him no uneasiness. The most careful arrangements had been made to note and report every movement of the enemy the next day.