These movements of both armies up the valley, Bragg being south of the Chickamauga and Rosecrans north, were continued until the position was almost south of Chattanooga, instead of south-west. Parallel with our army, and immediately in its rear, were two roads leading to Chattanooga,—the one immediately in the rear known as the Lafayette or Rossville road; the other a little further back, as the Dry Valley road. At the junction of these roads, half way to Chattanooga, itself eight miles distant, was the town of Rossville. These roads were the prizes for which was to be fought one of the most bloody and awful battles of the war. The loss of either was equally fatal, but the main Rossville road, being the most exposed, was the principal object of the enemy’s attacks. The efforts of the enemy at first were to overlap or turn the left flank. This would have given them the Rossville road. Failing in this they drove the center back, the center and left turning like a door upon the hinge at the extreme left, until the line of battle was formed directly across the roads instead of parallel with them. This was accomplished during the second day’s fight. General Thomas commanded the left wing, Crittenden the center, and McCook the right. The front of the army, facing almost east, was ranged up and down the valley from north to south, with the river in front and the roads in their rear. The whole valley was covered with dense forests, except where a farm had been made, and was full of rocky hills and ridges. So much concealed was one part of the valley from another, that the rebel army of fifty thousand men was formed in line of battle within a mile of the union lines on the same side of the river, without either army suspecting the other’s presence.