19th to Iuka, where, on the next day, I was
most agreeably surprised to hear of the arrival at Eastport (only
ten miles off) of two gunboats, under the command of Captain
Phelps, which had been sent up the Tennessee River by Admiral
Porter, to help us.

Satisfied that, to reach Athens and to communicate with General
Rosecrans, we should have to take the route north of the Tennessee
River, on the 24th I ordered the Fourth Division to cross at
Eastport with the aid of the gunboats, and to move to Florence.
About the same time, I received the general orders assigning
General Grant to command the Military Division of the Mississippi,
authorizing him, on reaching Chattanooga, to supersede General
Rosecrans by General George H. Thomas, with other and complete
authority, as set, forth in the following letters of General
Halleck, which were sent to me by General Grant; and the same
orders devolved on me the command of the Department and Army of the
Tennessee.

HEADQUARTERS OF THE ARMY
WASHINGTON, D.C., October 16, 1863

Major-General U. S. GRANT, Louisville.

GENERAL: You will receive herewith the orders of the President of
the United States, placing you in command of the Departments of the
Ohio, Cumberland, and Tennessee. The organization of these
departments will be changed as you may deem most practicable. You
will immediately proceed to Chattanooga, and relieve General
Rosecrans. You can communicate with Generals Burnside and Sherman
by telegraph. A summary of the orders sent to these officers will
be sent to you immediately. It is left optional with you to
supersede General Rosecrans by General G. H. Thomas or not. Any
other changes will be made on your request by telegram.

One of the first objects requiring your attention is the supply of
your armies. Another is the security of the passes in the Georgia
mountains, to shut out the enemy from Tennessee and Kentucky. You
will consult with General Meigs and Colonel Scott in regard to
transportation and supplies.

Should circumstances permit, I will visit you personally in a few
days for consultation.

H. W. HALLECK, General-in-Chief.

HEADQUARTERS OF THE ARMY
WASHINGTON, D. C., October 20, 1868.

Major-General GRANT, Louisville.

GENERAL: In compliance with my promise, I now proceed to give you
a brief statement of the objects aimed at by General Rosecrans and
General Burnside's movement into East Tennessee, and of the
measures directed to be