. THOMAS,
Chattanooga:

All preparations should be made for attacking the enemy's
position on Missionary Ridge by Saturday at daylight. Not being
provided with a map giving names of roads, spurs of the
mountains, and other places, such definite instructions cannot
be given as might be desirable. However, the general plan, you
understand, is for Sherman, with the force brought with him
strengthened by a division from your command, to effect a
crossing of the Tennessee River just below the mouth of
Chickamauga; his crossing to be protected by artillery from the
heights on the north bank of the river (to be located by your
chief of artillery), and to secure the heights on the northern
extremity to about the railroad tunnel before the enemy can
concentrate against him. You will co-operate with Sherman. The
troops in Chattanooga Valley should be well concentrated on your
left flank, leaving only the necessary force to defend
fortifications on the right and centre, and a movable column of
one division in readiness to move wherever ordered. This
division should show itself as threateningly as possible on the
most practicable line for making an attack up the valley. Your
effort then will be to form a junction with Sherman, making your
advance well towards the northern end of Missionary Ridge, and
moving as near simultaneously with him as possible. The
junction once formed and the ridge carried, communications will
be at once established between the two armies by roads on the
south bank of the river. Further movements will then depend on
those of the enemy. Lookout Valley, I think, will be easily
held by Geary's division and what troops you may still have
there belonging to the old Army of the Cumberland. Howard's
corps can then be held in readiness to act either with you at
Chattanooga or with Sherman. It should be marched on Friday
night to a position on the north side of the river, not lower
down than the first pontoon-bridge, and there held in readiness
for such orders as may become necessary. All these troops will
be provided with two days' cooked rations in haversacks, and one
hundred rounds of ammunition on the person of each infantry
soldier. Special care should be taken by all officers to see
that ammunition is not was