THE OPPOSING ARMIES AT THE FIRST BULL RUN.

The composition and losses of each army as here stated give the gist of all the data obtainable in the Official Records.K stands for killed; w for wounded; m for captured or missing ; c for captured.— Editors.

COMPOSITION AND LOSSES OF THE UNION ARMY.

Brig.-Gen. Irvin McDowell . Staff lose: w, 1. (Capt. O. H. Tillingliast, mortally wounded.)

First Division, Brig.-Gen. Daniel Tyler. Staff lose:w, 2. First Brigade, Col. Erasmus D. Keyes: 2d Me.,Col. C. D. Jameson; 1st Conn., Col. G. 8. Burnham; 2dConn., Col. A. H. Terry ; 3d Conn., Col. John L. Chat-field. Brigade loss: k, 19; w, 50; m, 154 = 223. SecondBrigade, Brig.-Gen. Robert C. Schenck: 2dN.Y. (militia),Col. G. W. B. Tompkins; 1st Ohio, Col. A. McD. McCook;2d Ohio, Lieut.-Col. Rodney Mason; E, 2d U. S. Arty. ,Capt. J. H. Carlisle. Brigade loss: k, 21; w, 25; m, 52 =98. Third BHgade, Col. W. T. Sherman : 13th N. Y., Col.

I. F. Quinby; 69th N. Y. , Col. M. Corcoran (w and c),Capt. James Kelly; 79th N. Y. , Col. James Cameron (k);2d Wis., Lieut.-Col. H. W. Peck; E, 3d U. S. Arty. , Capt.

R. B. Ayres. Brigade loss : k, 107 ; w, 205; in, 293 = 605.Fourth Brigade, Col. Israel B. Richardson : 1st Mass.,Col. Robert Cowdin; 12 tb N. Y., Col. Ezra L. Walrath;2d Mich., Major A. W. Williams; 3d Mich., Col. DanielMcConnell; G, let U. S. Arty., Lieut . John Edwards;

M, 2d U. 8. Arty., Capt. Henry J. Hunt . This brigade wasonly slightly engaged in front of Blackburn’s Ford, withthe loss of one officer killed.

Second Division, Col. D. Hunter (w), Col. AndrewPorter. Staff loss: w, 1; m, 1 = 2. First Brigade, Col.Andrew Porter: 8th N. Y. (militia), Col. Geo. Lyons; 14th

N. Y. (militia), Col. A. M. Wood (w and c), Lieut.-Col. E.B. Fowler; 27th N. Y. , Col. H. W. Slocum (w), Major J.

J. Bartlett; Battalion U. S. Infantry, Major GeorgeSykes; Battalion U. S. Marines , Major J. G. Reynolds;Battalion U. S. Cavalry, Major I. N. Palmer; D, 5tli U.

S. Arty. , Capt. Charles Griffin. Brigade loss: k, 86 ; w,177; m, 201 = 464. Second BHgade, Col. Ambrose E.Burnside : 2dN. H., Col. Gilman Marston (w), Lieut.-Col.F. S. Fiske; 1st R. I., Major J. P. Balch; 2d R. I. (withbattery), Col. John S. Slocum (k), Lieut.-Col. FrankWheaton; 71st N. Y. (with two howitzers), Col. H. P.Martin. Brigade loss: k, 58; w, 171; m, 134 = 363.

Third Division, Col. Samuel P. Heintzelman . FirstBrigade, Col. W. B. Franklin: 5th Mass., Col. S. C. Law-rence; 11th Mass., Col. George Clark, Jr.; 1st Minn.,Col. W. A. Gorman; 1,1st U. S. Arty., Capt. J. B. Rick-etts (w andc), Lieut . Edmund Kirby. Brigade loss: k,70; w, 197; m, 92 = 359. Second BHgade, Col. OrlandoB. Willcox (w and c), Col. J. H. H. Ward: llth N. Y. ,Lieut.-Col. N. L. Farnkam; 38th N. Y. , Col. J. H. H.Ward, Lieut.-Col. A. Farnsworth; 1st Mich., Major A. F.Bidwell; 4th Michigan, Col. D. A. Woodbury; D, 2d U. S.Arty. , Capt. Richard Arnold. Brigade loss: k, 65; w,177; m, 190 = 432. Third Brigade , Col. Oliver O. How-ard ; 3d Me., Major II. G. Staples; 4th Me., Col. H. G.Berry; 5th Me,, Col. M. II. Duunell; 2d Vt., Col. HenryWhiting. Brigade loss: k, 27; w, 100; m, 98=225.

Fourth (Reserve) Division. [Not on the field of bat-tle.] Brig.-Gen. Theodore Runyon. Militia: 1st N. J.,Col. A. J. Johnson ; 2d N. J., Col. H. M. Baker; 3d N. J. ,Col. Wm Napton; 4th N. J. , Col. Matthew Miller, Jr.Volunteers: 1st N. J., Col. W. R. Montgomery; 2d N.J., Col. Geo. W. McLean; 3d N. J. , Col. George W. Taylor;41st N. Y. , Col. Leopold von Gilsa.

Fifth Division. [In reserve at Centreville and notengaged in the battle proper. It had some skirmishingduring the day and while covering the retreat of thearmy.] Col. Dixon S. Miles. First Brigade, Col. LouisBlenker: 8th N. Y. (Yols.) Lieut.-Col. Julius Stahel ; 29th

N. Y., Col. Adolph von Steinwehr; 39th N. Y. (GaribaldiGuards), Col. F. G. D’Utassy; 27th Penna., Col. MaxEinstein; A, 2 d U. S. Arty., Capt. John C. Tidball ; Book-wood’s N. Y. battery, Captain Charles Bookwood. Bri-gade loss: k, 6; w, 16; m, 96 = 118. Second BHgade, Col.Thomas A. Davies : 16 th N.Y. , Lieut.-Col. Samuel Marsh;18th N.Y. , Col. W. A. Jackson; 31stN.Y., Col. C. E. Pratt;32d N. Y., Col. R. Matheson; G, 2d U. S. Arty., Lieut .

O. D. Greene. Brigade loss: w, 2; m, 1 = 3.

Total loss of the Vnion army : killed, 460; wounded, 1124; captured or missing, 1312,—grand total, 2896.

STRENGTH OF THE UNION ARMY.

General James B. Fry, who was General McDowell ’sadjutant-general , prepared in October, 1884, a statementof the strength of the army, in brief as follows:

“It was not practicable at the time to ascertain thestrength of the army with accuracy; and it is impossiblenow to make a return which can he pronounced abso-lutely correct.

“ The abstract which appears on page 309, vol. ii., * Offi-cial Records/ is not a return of McDowell ’s army at thebattle of Bull Run, and was not prepared by me, but, asI understand, has been compiled since the war. It pur-ports to give the strength of the ‘ Department of North-eastern Virginia/ July 16 th and 17th, not of McDowell ’sarmy, July 21st. It does not show the losses resultingfrom the discharge of the 4th Pennsylvania Infantry andVarian’s New York battery, which inarched to the rearon the morning of the 21st, nor the heavy losses inci-dent to the march of the army from the Potomac; itembraces two regiments—the 21st and 25th New York In-fantry — which were not with the army in the field; andit contains the strength of Company E, Second UnitedStates Cavalry, as a special item, whereas that companyis embraced in the strength of the Second (Hunter’s)Division, to which it, with the rest of the cavalry,belonged.

“In his report of the battle (p. 324, vol. ii., ‘OfficialRecords ’) General McDowell says he crossed Bull Run‘ with about eighteen thousand men.’ I collected infor-mation to that effect for him at the time. His statementis substantially correct. The following is an exhibit indetail of the forces actually engaged:

Commands.

Officers.

Enlisted

men.

General staff.

First Division, two brigades.

19

284

5,068

Second Division, two brigades —Third Division, three brigades....

252

5,717

341

6,891

Total seven brigades.

896

17,676

“Only Keyes’s .and Sherman 's brigades of the fourbrigades of the First Division crossed Bull Run.

“ The Fifth Division, with Richardson ’s brigade of theFirst Division attached, w^s in reserve at and in frontof Centreville. Some of it was.lightly engaged on ourside of Bull Run in repelling a feeble advance of theenemy. The Fourth (Reserve) Division was left toguard our communications with the Potomac, its ad-vance being seven miles in rear of Centreville.

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