Abstract from tri-monthly return of the Department of the Cumberland, Major General George H. Thomas, U. S. Army, commanding, October 20, 1863; headquarters Chattanooga.

Present for duty,

equipped.a

Officers. Men. Aggregate Aggregat

. e

Command. present

for

duty.

Fourth Army Corps 1,270 18,511 19,781 20,260

(Grange)

Eleventh Army 313 5,839 6,152 6,101

Corps(Howard)b

Twelfth Army Corps 480 8,671 9,211 9,966

(Slocum)b

Fourteenth Army Corps 1,011 18,210 19,221 20,057

(Thomas)

Cavalry Corps (Mitchell) 406 7,458 7,864 9,185

Artillery Reserve 39 1,180 1,219 1,227

(Brannan)

Coburn's brigade 88 1,555 1,643 1,691

Miller's brigade 128 1,930 2,058 2,162

Pioneer Brigade c. 19 412 431 440

Signal corps c. -- -- -- 149

Chattanooga 30 405 435 435

Clarksville 11 243 254 263

Galatin 34 631 665 906

Fort Donelson 14 258 272 272

Nashville (R. S. Granger) 151 2,727 2,878 2,885

Unattached infantry 214 5,209 5,423 5,319

Unattached artillery 19 429 448 442

Unattached cavalry 26 397 423 406

1st Michigan Engineers 21 538 559 557

Total 4,274 74,603 78,877 81,968

Command. Aggregate Aggregate Pieces of

present. present field

and artillery.

absent.

Fourth Army 24,278 43,868 53

Corps(Granger)

Eleventh Army 7,239 11,827 26

Corps(Howard)b

Twelfth Army Corps 9,966 15,513 20

(Slocum)b

Fourteenth Army Corps 24,412 39,920 46

(Thomas)

Cavalry Corps (Mitchell) 10,081 16,380 9

Artillery Reserve 1,284 1,987 50

(Brannan)

Coburn's brigade 2,043 3,003 6

Miller's brigade 2,573 3,405 6

Pioneer Brigade c. --- --- ---

Signal corps c. --- --- ---

Chattanooga 715 856 ---

Clarksville 452 481 6

Galatin 1,090 1,401 6

Fort Donelson 438 470 4

Nashville (R. S. Granger) 3,346 3,848 19

Unattached infantry 6,181 8,224 ---

Unattached artillery 469 525 25

Unattached cavalry 459 674 ---

1st Michigan Engineers 686 904 ---

Total 95,712 153,286 276

a Or " actually available for the line of battle on the date of the regimental reports."

b Major General Hooker commanding both corps.

c Officers and men detailed from other organizations, and elsewhere accounted for in the columns" Aggregate present" and " Aggregate present" Aggregate present and absent."

LOUISVILLE, KY., October 21, 1863-11 a. m.

(Received 2.40 p. m.)

Honorable P. H. WATSON, Assistant Secretary of War:

General Grant reached Nashville safely yesterday. I have dispatch from him stating that he will go on to Stevenson to-day, and thence to Chattanooga, fast as possible. He is in communication with General Burnside.

Generals Garfield and Steedman are here on their way home. Their representations of the incidents of the battle of Chickamauga more that confirm the worst that has reached us from other sources as to the conduct of the commanding general and the great credit that is due to General Thomas.

I expect to leave for home to-morrow, having completed all the arrangements in regard to railroad management and transportation. I will not make as quick time returning as I did coming here.

EDWIN M. STANTON,

Secretary of War.

HEADQUARTERS DEPARTMENT OF THE CUMBERLAND,
Chattanooga, October 21, 1863.

Major-General HOOKER, Stevenson:

The general understands from your report that a steam-boat will be ready for use at Bridgeport by Sunday next, the 25th instant.