The army made the movement along three separate routes. Crittenden’s corps, forming the left, was to advance by a circuitous route, to a point about fifteen miles south-west of Chattanooga, and make his crossing of the Tennessee River there. Thomas, as our center, was to cross a little farther down stream, and McCook, thirty miles farther to the right. These real movements were to be made under the cover of an apparent one. About seven thousand men marched directly to the river shore, opposite Chattanooga, as if a direct attack were to be made on the place. “The extent of front presented, the show of strength, the vigorous shelling of the city by Wilder’s artillery, the bold expression of the whole movement, constituted a brilliant feint.” Bragg was deceived again. Absorbed in the operations in front of the place, he offered no resistance to the crossing of the Tennessee River by the main army. By September 3d, the Union forces were all on the southern side of the Tennessee. Sand Mountain, the first of the ridges on that side of the river, rises abruptly from the bank. The repair and construction of roads occupied a little time; but Thomas and McCook pushed forward vigorously, and by the evening of the 6th of September had crossed Sand Mountain, and occupied the valley between it and the Lookout Range. Each of these corps had crossed the range at points opposite their crossings of the river, and, though in the same valley, were thirty-five miles apart. Crittenden, instead of crossing, turned to his left, and marched up the river bank toward Chattanooga, and crossed into the Lookout Valley by a pass near the town. On the 7th the next stage of the movement began, viz: the crossing of Lookout Range, in order to pass to the enemy’s rear, and, by endangering his supplies, compel him to abandon Chattanooga. As soon as Bragg’s spy-glasses on Lookout Mountain, at Chattanooga, disclosed this movement, the order to evacuate the place was given. Shelbyville and Tullahoma were repeated, and on the morning of September 9th Crittenden marched in and took the place without the discharge of a gun. Strategy had again triumphed. The door was unlocked. The fall of Chattanooga was accomplished. The plan of the campaign had been carried out successfully. The North was electrified. The South utterly discomfited. Of the fall of Chattanooga, which, as we have shown, was but the continuation of the plan of the Tullahoma campaign, and was predicted by Garfield, even to the manner of its accomplishment, in his argument to Rosecrans in favor of an advance, Pollard, the Confederate historian, writes: