[300] on Monday morning retook the heights of Fredericksburg, thus cutting off Sedgwick from communication with that place, and enveloping him on three sides.
To cut this knot, Lee resolved to further re-enforce the troops opposed to Sedgwick and drive him across the Rappahannock, thus eliminating from the problem one important factor. Accordingly, on Monday morning Anderson was directed to proceed with his remaining three brigades to join McLaws.1 Reaching Salem Heights about noon, he threw his force around on Sedgwick's left, with the view of cutting his command off from the river. The Confederates, however, met considerable delay in getting into position, and the attack was not begun till six o'clock, when it was made with great impetuosity—Sedgwick resisting with the utmost stubbornness, but forced to yield ground, especially on the left. Happily, darkness soon ensued to prevent the enemy's following up his advantage, and, under cover of night, Sedgwick safely withdrew his corps across the Rappahannock at Banks' Ford, where a ponton-bridge had been laid the day before.
Thus it was that Lee on Tuesday morning (May 5th) saw himself relieved from this menace in his rear; and having now but a single foe to cope with, he promptly recalled the divisions of McLaws and Anderson, united them with his main force at Chancellorsville, and resolved to give the remaining section of the Union army the coup de grace. Preparations were made during the afternoon and evening to assail Hooker's position at daylight the following morning (Wednesday, May 6th). When daybreak, however, came, and the Confederate skirmishers advanced, it was found that the army had, during the night, withdrawn across the Rappahannock.
Hooker had determined, on Monday night, to recross the river; but when the question was submitted to the judgment of his corps-commanders, it was found that a majority of those present were in favor of an advance rather than a withdrawal. Hooker, however, had lost all stomach for fight.