Our lines extended across the widest part of the peninsula. Our right, to the west of the town, under General Alexander McD. McCook, first rested near the mouth of Chattanooga Creek, but was subsequently drawn in further. Next came the centre, under Thomas, and the left, under Crittenden, thus repeating the formation that had been followed through the campaign. On reaching the assigned positions, our troops were at once put to work digging rifle-pits for immediate protection. Then day and night were employed in the construction of breastworks of solid earth in the rear of the pits. They arose like magic. The rebels had erected several forts within the town limits, which were put to use. The chief engineer, General Morton, had designed an interior chain of redoubts connected by breastworks, which were rapidly approaching completion. On Cameron Hill, an abrupt elevation on the west side of the peninsula, a regular casemated citadel was being constructed. Altogether the army could be said to be well sheltered within a strongly entrenched camp. Three days after the battle, Rosecrans reported to the War Department that he had 30,000 effectives left. This number had been increased in the meantime by returned stragglers and furloughed officers and men, and by various bodies on detached service, to about 35,000 — an ample number to hold the place behind the entrenchments against any attack by the rebel army. Our security was, nevertheless, by no means absolutely assured; we were, on the contrary, exposed to the double danger of being either bombarded or starved out of the place.
Missionary Ridge divides the valleys of the Chattanooga and Chickamauga. It rises abruptly, like a mighty rampart, to a height of 1600 feet above the Tennessee River, and at an average distance of about two miles from Chattanooga. From the nearest part of its summit every quarter of the town is commanded. The rebel lines stretched from near the abutment of the Ridge on the Chickamauga along its brow to and beyond Chattanooga Creek, up the slopes of Lookout Mountain facing the town. The enemy's camps
