Before evening of May 1 Hooker's advance guard was driven back, and the Confederate forces swept on until within one mile of Chancellorsville, and there, stopped by a "position of great natural strength" (General Lee) and by deep entrenchments, log breastworks and felled trees, they ceased to progress. It was evident at nightfall that with his inferior force the Southern commander could not drive Hooker, and that if he failed to do so, Sedgwick would drive back the small force in Fredericksburg and would come on from Fredericksburg and crush him. Jackson and Lee bivouaced that night near where the Old Plank Road and the Furnace Road intersect, and here formulated their plans for the morrow. From Captain Murray Taylor, of General A. P. Hill's staff, they learned that a road existed, by advancing down which (the Furnace Road) then turning sharply and marching in a "V" Jackson's plan to turn Hooker's right might be carried out, and at Captain Taylor's suggestion they sent for "Jack" Hayden, who could not be gotten at once, and who, being an old man, was "hiding out" to avoid "Yankee" marauders. Lee and Jackson slept on the ground. Jackson, over whom an officer had thrown his overcoat, despite his protests, waited until the officer dozed, gently laid the coat over him and slept uncovered, as he had not brought his own overcoat. Later, arising chilled, he sat by the fire until near dawn, when his army got in motion. When Jackson moved away in the early hours of May 2 there were left to face Hooker's 91,000 men on the Federal left, Lee's 14,000 men, attacking and feinting, and nowhere else a man. Jackson was moving through tangled forests, over unused roads, and before 5 o'clock of that memorable afternoon of May 2 he had performed the never-equalled feat of moving an army, infantry and artillery of 26,000 men sixteen miles, entirely around the enemy, and reversing his own army's front. He was now across the Plank Road and the Turnpike, about four miles from Chancellorsville, facing toward Lee's line, six miles away. And Hooker was between them! [Sidenote: _Jackson's Stroke of Genius_] It was 5:30 when Jackson's command (Colston's and Rhodes' Divisions, with A. P. Hill in reserve) gave forth the rebel yell and sweeping along through the woods parallel to the roads, fell on Hooker's right while the unsuspecting army was at supper. The Federals fled in utter disorder. Before his victorious command, Jackson drove Hooker's army through the dark pine thickets until the Federal left had fallen on Chancellorsville and the right wing was piled up and the wagon trains fleeing, throwing the whole retreating army into confusion. At 9 o'clock he held some of the roads in Hooker's rear, and the Northern army was in his grasp.