...he Japanese. Chattanooga, as we all know, is in the mouth of a narrow valley, formed by Lookout mountain and a spur of mountains known as Missionary Ridge. Lookout mountain juts abruptly upon the Tennessee river , a short distance to the west of Chattanooga, and extends southward into Georgia. For fifty miles or more the densely wooded hills and rocky cliffs are impassable for troops, except by two wagon ...