Lee remained throughout the winter at his headquarters in the woods south of Fredericksburg, watching the Northern army, which continued to occupy the country north of the city, with the Potomac River as their base of supplies.
With the coming of spring, it was obviously the intention of the Federal authorities to again essay the crossing of the Rappahannock at some point either above or below Fredericksburg; and as the movement above was less difficult, and promised more decisive results, it was seen by General Lee that this would probably be the quarter from which he might expect an attack. General Stuart, a soldier of sound judgment, said, during the winter, "The next battle will take place at Chancellorsville," and the position of Lee's troops seemed to indicate that this was also his own opinion. His right remained still "opposite Fredericksburg," barring the direct approach to Richmond, but his left extended up the Rappahannock beyond Chancellorsville, and all the fords were vigilantly guarded to prevent a sudden flank movement by the enemy in that direction. As will be seen, the anticipations of Lee were to be fully realized. The heavy blow aimed at him, in the first days of spring, was to come from the quarter in which he had expected it.
The Federal army was now under command of General Joseph Hooker, an officer of dash, energy, excellent administrative capacity, and, Northern writers add, extremely prone to "self-assertion." General Hooker had harshly criticised the military operations both of General McClellan on the Chickahominy, and of General Burnside at Fredericksburg, and so strong an impression had these strictures made upon the minds of the authorities, that they came to the determination of intrusting the command of the army to the officer who made them, doubtless concluding that his own success would prove greater than that of his predecessors. This opinion seemed borne out by the first proceedings of General Hooker. He set to work energetically to reorganize and increase the efficiency of the army, did away with General Burnside's defective "grand division" arrangement, consolidated the cavalry into an effective corps, enforced strict discipline among officers and men alike, and at the beginning of spring had brought his army to a high state of efficiency. His confident tone inspired the men; the depression resulting from the great disaster at Fredericksburg was succeeded by a spirit of buoyant hope, and the army was once more that great war-engine, ready for any undertaking, which it had been under McClellan.
It numbered, according to one Federal statement, one hundred and fifty-nine thousand three hundred men; but according to another, which appears more reliable, one hundred and twenty thousand infantry and artillery, and twelve thousand cavalry; in all, one hundred and thirty-two thousand troops. The army of General Lee was considerably smaller. Two divisions of Longstreet's corps had been sent to Suffolk, south of James River, to obtain supplies in that region, and this force was not present at the battle of Chancellorsville. The actual numbers under Lee's command will appear from the following statement of Colonel Walter H. Taylor, assistant adjutant-general of the army:
Our strength at Chancellorsville:
Anderson and McLaws……………………… 13,000
Jackson (Hill, Rodes, and Trimble)………… 21,000
Early (Fredericksburg)…………………… 6,000
_______
40,000
Cavalry and artillery……………………. 7,000
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Total of all arms……………………….. 47,000
As the Federal infantry numbered one hundred and twenty thousand, according to the smallest estimate of Federal authorities, and Lee's infantry forty thousand, the Northern force was precisely three times as large as the Southern.
[Illustration: Map—Battle of Chancellorsville.]
General Hooker had already proved himself an excellent administrative officer, and his plan of campaign against Lee seemed to show that he also possessed generalship of a high order. He had determined to pass the Rappahannock above Fredericksburg, turn Lee's flank, and thus force him to deliver battle under this disadvantage, or retire upon Richmond. The safe passage of the stream was the first great object, and General Hooker's dispositions to effect this were highly judicious. A force of about twenty thousand men was to pass the Rappahannock at Fredericksburg, and thus produce upon Lee the impression that the Federal army was about to renew the attempt in which they had failed under General Burnside. While General Lee's attention was engaged by the force thus threatening his right, the main body of the Northern army was to cross the Rappahannock and Rapidan above Chancellorsville, and, sweeping down rapidly upon the Confederate left flank, take up a strong position between Chancellorsville and Fredericksburg. The column which had crossed at the latter point to engage the attention of the Confederate commander, was then to recross to the northern bank, move rapidly to the upper fords, which the advance of the main body would by that time have uncovered; and, a second time crossing to the southern bank, unite with the rest. Thus the whole Federal army would be concentrated on the southern bank of the Rappahannock, and General Lee would be compelled to leave his camps on the hills of the Massaponnax, and fight upon ground dictated by his adversary. If he did not thus accept battle, but one other course was left. He must fall back in the direction of Richmond, to prevent his adversary from attacking his rear, and capturing or destroying his army.
In order to insure the success of this promising plan of attack, a strong column of well-mounted cavalry was to cross in advance of the army and strike for the railroads in Lee's rear, connecting him with Richmond and the Southwest. Thus flanked or cut off, and with all his communications destroyed, it seemed probable that General Lee would suffer decisive defeat, and that the Federal army would march in triumph to the capture of the Confederate capital.
This plan was certainly excellent, and seemed sure to succeed. It was, however, open to some criticism, as the event showed. General Hooker was detaching, in the beginning of the movement, his whole cavalry force for a distant operation, and dividing his army by the ruse at Fredericksburg, in face of an adversary not likely to permit that great error to escape him. While advancing thus, apparently to the certain destruction of Lee, General Hooker was leaving a vulnerable point in his own armor. Lee would probably discover that point, and aim to pierce his opponent there. At most, General Hooker was wrapping in huge folds the sword of Lee, not remembering that there was danger to the cordon as well as to the weapon.