131,661. Of this number about 90,000 were employed in the battle of Chancellorsville. The physical force of the Federals thus appears to have been about double that of the Confederate army.
The advance Federal movement began by the crossing of Sedgwick below Fredericksburg and the passage by Hooker of the upper fords. Soon after moving his own force across the river, Hooker withdrew a part of Sedgwick's force and concentrated at Chancellorsville an army of six corps, containing nearly 90,000 men under his immediate command. The dispositions thus made by the Federal commander to force a retreat by Lee at great disadvantage or a fight in which he could be crushed, have been commended by military critics, but the great abilities of the Confederate chieftain were equal to the vast responsibility now thrust upon him. With him were the superb corps and division generals, Jackson, Anderson, McLaws, Early, Stuart and Fitzhugh Lee, whose commands confided in their skill and were ready to execute their plans.
It was quickly observed by Lee that the main assault was not to be made by Sedgwick, and that a direct attack on Hooker was perilous on account of his great numbers and strong position. A flank movement by Jackson while Early held Sedgwick was therefore soon adopted as the principal feature of the plan, notwithstanding the details of execution divided the Confederate army into three parts. Jackson executed his part of the plan on the afternoon of May 2d, with such wonderful daring and skill that his onset crushed through Hooker's right wing and spread a panic over nearly the whole of the Federal army at Chancellorsville. Sedgwick, at Fredericksburg, had meantime driven Early 's small force from his front and was directing his advance toward Hooker. But on the next morning after Jackson's bewildering flank assault, his force, commanded by Stuart after the great hero of the first fight had fallen, joined the divi-
