Numbers 2. Abstract of returns of Army Potomac for October 10 and 20.

OCTOBER 10.

Present for duty.

Command. Officers. Men. Aggregate

present.

General 135 1,155 1,538

headquarters b ...

Engineer troops... 40 1,051 1,248

Artillery Reserve, 101 2,803 3,209

&c.........

First Army 586 10,681 13,080

Corps......

Second Army Corps. 604 10,289 11,864

Third Army Corps.. 741 13,862 16,915

Fifth Army Corps.. 629 11,267 13,164

Sixth Army Corps.. 835 13,706 16,172

Cavalry Corps c... 648 11,656 14,894

Total............ 4,319 76,470 92,084

Present for duty equipped.a

Infantry. Cavalry.

Command. Officers. Men. Officers.

General 49 526 25

headquarters b ...

Engineer troops... ....... ........ .......

Artillery Reserve, 20 685 .......

&c.........

First Army 553 10,042 2

Corps......

Second Army Corps. 587 8,243 .......

Third Army Corps.. 708 12,652 .......

Fifth Army Corps.. 598 10,660 .......

Sixth Army Corps.. 684 13,011 2

Cavalry Corps c... ....... ........ 596

Total............ 3,199 55,819 625

Present for duty equipped.a

Infantry. Artillery.

Command. Men. Officers Men. Pieces of

artillery

General 470 ...... ...... ......

headquarters b ...

Engineer troops... ...... ...... ...... ......

Artillery Reserve, ...... 66 2,044 107

&c.........

First Army 107 20 541 24

Corps......

Second Army Corps. ..... 16 537 26

Third Army Corps.. ..... 23 794 42

Fifth Army Corps.. ..... 15 430 28

Sixth Army Corps.. 101 24 811 42

Cavalry Corps c... 10,823 20 668 30

Total............ 11,501 184 5,825 299

OCTOBER 20.

General 134 979 1,272

headquarters b.....

Engineer troops... 36 834 1,110

Artillery Reserve, 110 3,116 3,590

&c...........

First Army Corps... 586 11,062 13,325

Second Army Corps.. 616 9,265 10,671

Third Army Corps... 784 14,015 16,949

Fifth Army Corps... 653 11,232 12,898

Sixth Army Corps... 892 14,520 16,976

Cavalry Corps c.... 633 11,208 14,471

Total......... 4,444 76,231 91,262

General 49 528 17

headquarters b.....

Engineer troops... ........ ........ ......

Artillery Reserve, 21 664 ......

&c...........

First Army Corps... 551 10,425 2

Second Army Corps.. 561 8,427 ......

Third Army Corps... 738 12,762 ......

Fifth Army Corps... 616 10,313 ......

Sixth Army Corps... 825 13,414 2

Cavalry Corps c.... ......... ......... 589

Total......... 3,361 56,533 610

General 287 ...... ....... .....

headquarters b.....

Engineer troops... ....... ...... ....... .....

Artillery Reserve, ....... 60 1,946 99

&c...........

First Army Corps... 90 21 547 24

Second Army Corps.. ....... 16 537 26

Third Army Corps... ....... 23 790 42

Fifth Army Corps... ....... 14 518 32

Sixth Army Corps... 114 25 906 46

Cavalry Corps c.... 9,291 20 655 30

Total......... 9,782 179 5,899 299

a Or actually available for the line of battle at the date of the subordinate reports.

b Including provost guard, guards and orderlies, and signal corps.

c Serviceable horses, October 10, 13,682; October 20, 12,364.

Numbers 3. Return of Casualties in the Union forces.

[Compiled from nominal lists of casualties, returns, &c.]

Killed. Wounded.

Command. Officers Enlisted Officers. Enlisted

men. men.

First Army Corps ...... 1 ...... 6

(Newton).........

Second Army Corps 2 48 29 306

(Warren)........

Third Army Corps 1 6 4 65

(French)........

Fifth Army Corps ...... 5 ...... 10

(Sykes)........

Sixth Army Corps ...... ...... ...... 1

(Sedgwick)......

Cavalry Corps 4 69 29 283

(Pleasonton)......

Total........... 7 129 62 671

Captured or missing.

Command. Officers. Enlisted Aggregate.

men.

First Army Corps 2 63 72

(Newton).........

Second Army Corps 2 161 548

(Warren)........

Third Army Corps 3 290 369

(French)........

Fifth Army Corps ....... 5 20

(Sykes)........

Sixth Army Corps 5 26 32

(Sedgwick)......

Cavalry Corps 26 840 1,251

(Pleasonton)......

Total........... 38 1,385 2,292

Officers killed.-Colonel James E. Mallon, Forty-second New York; Captain John H. Lucas, First New Jersey Cavalry; Captain John Pierce, Sixth New York Cavalry; Captain James L. Peach, One hundred and sixth New York; Lieutenant Michael Coste, Seventy-second Pennsylvania; Lieutenant Carl S. Smith, Eighth New York Cavalry; Lieutenant Elwood Davis, Third Pennsylvania Cavalry.

Mortally wounded.-Captain George W. Griggs, Second New York Cavalry; Captain Charles R. Bowe, Sixth Ohio Cavalry; Captain William H. Plumb, jr., One hundred and twenty-fifth New York; Lieutenant Charles H. Stevens, Fifteenth Massachusetts; Lieutenant James T. Lowe, Twelfth New Jersey.