the north side, and to go into camp opposite Chattanooga; with the
remainder of the command, Hooker was, at a time to be afterwards
appointed, to ascend the western slope between the upper and lower
palisades, and so get into Chattanooga valley.

The plan of battle was for Sherman to attack the enemy's right flank,
form a line across it, extend our left over South Chickamauga River so
as to threaten or hold the railroad in Bragg's rear, and thus force him
either to weaken his lines elsewhere or lose his connection with his
base at Chickamauga Station. Hooker was to perform like service on our
right. His problem was to get from Lookout Valley to Chattanooga Valley
in the most expeditious way possible; cross the latter valley rapidly to
Rossville, south of Bragg's line on Missionary Ridge, form line there
across the ridge facing north, with his right flank extended to
Chickamauga Valley east of the ridge, thus threatening the enemy's rear
on that flank and compelling him to reinforce this also. Thomas, with
the Army of the Cumberland, occupied the centre, and was to assault
while the enemy was engaged with most of his forces on his two flanks.

To carry out this plan, Sherman was to cross the Tennessee at Brown's
Ferry and move east of Chattanooga to a point opposite the north end of
Mission Ridge, and to place his command back of the foot-hills out of
sight of the enemy on the ridge. There are two streams called
Chickamauga emptying into the Tennessee River east of Chattanooga--North
Chickamauga, taking its rise in Tennessee, flowing south, and emptying
into the river some seven or eight miles east; while the South
Chickamauga, which takes its rise in Georgia, flows northward, and
empties into the Tennessee some three or four miles above the town.
There were now one hundred and sixteen pontoons in the North Chickamauga
River, their presence there being unknown to the enemy.