...iving that Hooker's army had been much strengthened, Lee thought it necessary to drive Sedgwick across the Rappahannock before again attacking the main body. Early was sent to retake the Heights of Fredericksburg , and he cut Sedgwick off from the city. Early was reinforced by Anderson, by which Sedgwick was enclosed on three sides. At six o'clock in the evening the Confederates attacked him. His forces ga...