Available. Aggregate. Second Brigade, Colonel J. C. Sullivan

commanding:

5th Ohio Volunteers,

Lieutenant-Colonel Patrick.............. 821 918

62nd Ohio Volunteers,

Colonel F. B. Pond......................... 854 948

66th Ohio Volunteers,

Colonel Charles Candy...................... 730 892

13th Indiana Volunteers,

Lieutenant-Colonel Foster............... 632 848

39th Illinois Volunteers,

Colonel T. O. Osborn....................... 550 788

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Total................................... 3,587 4,394

Third Brigade, Colonel E. B. Tyler

commanding:

7th Ohio Volunteers,

Lieutenant-Colonel Creighton............ 659 886

29th Ohio Volunteers,

Colonel Buckley......................... 696 893

7th Indiana Volunteers,

Colonel Gavin........................... 716 961

1st Virginia Volunteers,

Colonel Thoburn......................... 674 891

110th Pennsylvania Volunteers,

Colonels Lewis.......................... 462 670

Andrew Sharpshooters.................... 48 96

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Total................................... 3,255 4,397

Artillery Corps, Lieutenant-Colonel Daum commanding.-Company E, Fourth Artillery, U. S. Army, Captain Clark; 109 available, 121 aggregate; six guns, 10-pounder Parrotts. Company H, First Ohio Volunteer Artillery, Captain Huntington; 124 available, 144 aggregate; six guns, 6-pounder rifled. Company L, First Ohio Volunteer Artillery, Captain Robinson 128 available, 150 aggregate; six guns, four 6-pounder smooth-bore, two 12-pounder howitzers. Company A, First Virginia Volunteer Artillery, Lieutenant J. Jenks; 119 available, 132 aggregate; six guns, four 10-pounder Parrotts, two 6-pounder brass smooth-bore. Company B, First Virginia Volunteer Artillery, Captain Davey; 128 available, 148 aggregate; two guns, 10-pounder Parrotts. Captain Wallace, Fourth Ohio Volunteer Infantry, one gun, 12-pounder brass smooth-bore. Total, 608 available aggregate; twenty-seven guns.

Cavalry Corps.-First Battalion Pennsylvania Cavalry and squadron Ohio Cavalry, Captain J. Keys; 214 available, 469 aggregate. First Virginia Cavalry, Major Chamberlain; 484 available, 636 aggregate. Total, 698 available, 1,105 aggregate. The whole available force of cavalry is now detached from my command, and placed under Colonel Brodhead, chief of cavalry. For disposable force on hand: Infantry 9,549; artillery, 608; twenty-seven pieces of ordnance. Cavalry, 698. Total, 10,855.

Full and accurate reports have been made to division headquarters.

JAS. SHIELDS,

Brigadier-General.

SPECIAL ORDERS,
HEADQUARTERS ARMY OF THE POTOMAC,

Numbers 83.
Near Alexandria Seminary, Va., March 17, 1862.

* * * * * * *

Colonel Dixon S. Miles, Second Infantry, commanding Railway Brigade, will report his command to Major General John A. Dix, commanding at Baltimore, but may receive his instructions with regard to that portion of the railway lying within the geographical limits of the District of Columbia from Brigadier General James S. Wadsworth, military governor of that District.

* * * * * * *

By command of Major-General McClellan:

RICH'D B. IRWIN,

Captain, Aide-de-Camp, Acting Assistant Adjutant-General.