must depend on the railroad to Atlanta
as a base, for northern Georgia
was nearly destitute, as has been pointed out in another connection.
On the 16th of August, Rosecrans
put his army in motion to pass the Cumberland mountains
and marched southward.
Having crossed the Tennessee river
in the vicinity of Stevenson
and Bridgeport, Ala.
, the Federals
found themselves confronted by Sand mountain
, the northern extremity of which is known as Raccoon mountain
At the eastern base of this ridge runs Lookout creek
, separating from Sand mountain
the parallel ridge known as Lookout mountain
, whose abrupt termination, where Lookout creek
empties into the Tennessee
, looms up in the sky just southwest of Chattanooga
Beyond Lookout mountain
a valley runs in the same general direction, drained by Chattanooga creek
, east of which is another parallel ridge, more passable, called Missionary ridge
, the northward termination of which is east of Chattanooga
and is pierced by the tunnel of the Georgia State railroad.
East of Missionary ridge
lies the most important of these valleys, McLemore's cove, which is traversed by the west branch of Chickamauga creek
, and ends 25 miles below Chattanooga
in a junction of the mountain ridges.
is the next running a parallel course of 40 miles, and still further east are the ranges of Chickamauga hills and Taylor
These must all be traversed by Rosecrans
, six ridges separated by valleys and creeks, before he could reach the railroad communications of Bragg
On September 8th, Rosecrans
, having determined to flank his opponent out of Chattanooga
, ordered an advance on the right and center of his 45-mile line, up to this time hid behind the Lookout
perceiving these movements evacuated Chattanooga
after he had telegraphed the president, ‘Rosecrans
' main force attained my left and rear.
I followed and endeavored to bring him to action and secure my ’