References:
Dyer's Compendium of the War of the Rebellion, 1908 Edition

1st REGIMENT INFANTRY.

Organized at Washington, D.C., July 23 to October 25, 1861. Attached to Provisional Brigade, Casey's Division, Army of the Potomac, to November, 1861. Robinson's Brigade, Army of the Potomac, to December, 1861. Railroad guard, Bladensburg, Md., to May, 1862. Miles' Command, Harper's Ferry, W. Va., to June, 1862. 2nd Brigade, Sigel's Division, Dept. of the Shenandoah, to July, 1862. 2nd Brigade, 2nd Division, 2nd Army Corps, Army of Virginia, to August, 1862. 3rd Brigade, 2nd Division, 2nd Army Corps, Army of Virginia, to September, 1862. 3rd Brigade, 2nd Division, 12th Army Corps, Army of the Potomac, to October, 1862. District of Alexandria, Defences of Washington, D. C, to February, 1863. Slough's Command, Defences of Alexandria, 22nd Army Corps, Dept. of Washington, to February, 1865.

SERVICE.--Duty in the Defences of Washington, D.C., till December, 1861. Guard R. R. near Bladensburg, Md., till May, 1862. Ordered to Harper's Ferry, W. Va. Defence of Harper's Ferry, W. Va., May 24-30. Operations in the Shenandoah Valley, Va., till August. Battle of Cedar Mountain August 9. Pope's Campaign in Northern Virginia August 16-September 2. Fords of the Rappahannock August 28-26. Plains of Manassas August 27-29. Battle of Bull Run August 29-30 (Reserve). Moved to Washington, D.C., and duty in the defences of that city and Alexandria, Va., till February, 1865. Repulse of Early's attack on Washington July 11-13, 1864. Consolidated with 2nd Regiment District of Columbia Infantry February 28, 1865.

2nd REGIMENT INFANTRY.

Organized at Washington, D.C., February 26, 1862. Attached to Sturgis' Brigade, Military District of Washington, D.C.. to February, 1863, and 22nd Army Corps, Dept. of Washington, to March, 1864. 1st Brigade, Tyler's Division, 22nd Army Corps, to May, 1864. District of Alexandria, 22nd Army Corps, to September, 1865.

SERVICE.--Duty in the Defences of Washington and Alexandria entire term except participated in the Maryland Campaign September 6-22, 1862. Attached temporarily to 2nd Brigade, 1st Division, 5th Army Corps, Army of the Potomac. Battle of Antietam September 16-17. Sharpsburg, Shepherdstown Ford and near Williamsport September 19. Near Shepherdstown September 20. Mustered out September 12, 1865.

2nd BATTALION INFANTRY.

Organized at Washington, D.C., for the defence of that city April, 1861. Attached to Mansfield's Command, Dept. of Washington, to June, 1861. Stone's Expedition to July, 1861.

SERVICE.--Duty in the Defences of Washington, D. C, till June, 1861. Expedition to Rockville, Md., June 10-July 7. Seneca Mills June 14. Great Falls July 7, 1861. Mustered out July, 1861.

3rd BATTALION INFANTRY.

Organized at Washington, D.C., for the defence of that city April, 1861. Attached to Mansfield's Command, Dept. of Washington, to June, 1861. Stone's Expedition to July, 1861.

SERVICE.--Duty in the Defences of Washington, D.C., till June, 1861. Expedition to Rockville, Md., June 10-July 7. Great Falls July 7. Mustered out July, 1861.

5th BATTALION INFANTRY.

Organized at Washington, D.C., for the defence o! that city April, 1861. Attached to Mansfield's Command, Dept. of Washington, to June, 1861. Stone's Expedition to July, 1861.

SERVICE.--Duty in the Defences of Washington, D.C., till June, 1861. Expedition to Rockville, Md., June 10-July 7. Great Falls July 7. Mustered out July, 1861.

8th BATTALION INFANTRY.

Organized at Washington, D.C., for the defence of that city April, 1861. Attached to Mansfield's Command, Dept. of Washington, D.C., to June, 1861. Rockville Expedition to July, 1861.

SERVICE.--Duty in the Defences of Washington, D.C., till June, 1861. Expedition to Rockville, Md., June 10-July 7. Action at Seneca Mills June 17. Great Falls July 7. Mustered out July, 1861.

BOYD's COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 18, 1861. Mustered out July 16, 1861.

CALLAN'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 22, 1861 Mustered out July 22, 1861.

CARRINGTON'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for the defence of that city April 13, 1861. Mustered out July 10, 1861.

CLARKE'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 24, 1861. Mustered out July 24, 1861.

CROSS' COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 22, 1861. Mustered out July 15, 1861.

DEGGE'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 17, 1861. Mustered out July 17, 1861.

ELDER'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 20, 1861. Mustered out July 20, 1861.

FERGUSON'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 22, 1861. Mustered out July 22, 1861.

FLETCHER'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 24, 1861. Mustered out July 34, 1861.

FOXWELL'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 15, 1861. Mustered out July 15, 1861.

GERHARDT'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 11, 1861. Mustered out July 11, 1861.

GODDARD'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 17, 1861. Mustered out July 17, 1861.

GRINNELL'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 22, 1861. Mustered out June 11, 1861.

KELLY'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 11, 1861. Mustered out July 11, 1861.

KING'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 15, 1861. Mustered out July 15, 1861.

KNIGHT'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 18, 1861. Mustered out July 18, 1861.

KYRZANOWSKI'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 22, 1861. Mustered out July 22, 1861.

LOEFFLER'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 11, 1861. Mustered out July 11, 1861.

MARK'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 17, 1861. Mustered out July 17, 1861.

MILLER'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 17, 1861. Mustered out July 17, 1861.

MORGAN'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for the defence of that city April 17, 1861. Mustered out July 17, 1861.

MORRISON'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 23, 1861. Mustered out July 16, 1861.

McBLAIR'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for the defence o! that city April 23, 1861. Mustered out July 23, 1861.

McCLELLAND'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 20, 1861. Mustered out July 20, 1861.

McDERMOTT'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 18, 1861. Mustered out July 18, 1861.

McKIM'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 11, 1861. Mustered out July 11, 1861.

NALLY'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 11, 1861. Mustered out July 11, 1861.

POWELL'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 20, 1861. Mustered out July 17, 1861.

RODIER'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 13, 1861. Mustered out July 13, 1861.

RUTHERFORD'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 11, 1861. Mustered out July 11, 1861.

SMEAD'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 15, 1861. Mustered out July 15, 1861.

THISTLETON'S COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for defence of that city April 11, 1861. Mustered out July 11, 1861.

WILLIAMS' COMPANY MILITIA INFANTRY.

Organized at Washington, D.C., for the defence of that city April 10, 1861. Mustered out July 10, 1861