Military activities in Washington D. C. in 1861

Defenses of Washington D. C.

BRIGADIER GENERAL J K MANSFIELD, United States Army
Brigadier General J K Mansfield was assigned to command the Department of Washington D. C. between 27 April and 17 August, 1861.

Independent Companies Volunteer Militia

Clay Battalion Infantry: Maj. C H Clay
The Clay Battalion Infantry was also known as the Washington Guards and the Strangers' Guard and was organised on 14 April, 1861, at Washington D. C., under the command of Major C H Clay, Kentucky. The battalion was assigned to duty guarding the Navy Yard and the Long Bridge, Washington D. C. The Clay Battalion Infantry was assigned to the command of Major D Hunter, paymaster, United States Army, and was not mustered in United States service. The battalion was disbanded in May 1861.
Organised at Washington D. C. in April 1861

Frontier Guards: Capt. J H Lane
The Frontier Guards was organised with members from Illinois, Kanasas, and Massachusetts at Washington D. C., under the command of Captain J H Lane, Kansas, on 14 April, 1861, and was assigned to duty guarding the Executive Mansion and the Navy Yard, Washington D. C. The company was assigned to the command of Major D Hunter, paymaster, United States Army, and was not mustered in United States service. The company was disbanded on 3 May, 1861.
Organised at Washington D. C. in April 1861

Silver Greys: Capt. R Brown
The company was organised after a meeting at Capital Hill, Washington D. C., with members exempt from military service because of their age on 20 April, 1861, and was assigned to duty in the defenses of Washington D. C.
Organised at Washington D. C. in April 1861

Fossil Guards: Capt. J S Williams
The company was organised with veterans of the War of 1812 and members exempt from military service by law and was assigned to duty in the defenses of Washington D. C.
Organised at Washington D. C. in April 1861

District of Columbia Militia

Thirty-four companies of District of Columbia militia, 3019 men, were mustered in United States service for three months between 9 and 27 April, 1861, and were assigned to guard Washington D. C. and to protect government property and buildings. General Order No.3, Headquarters, District of Columbia Volunteers, 3 May, 1861, organised the thirty-three infantry companies as the 1st, 2nd, 3rd, 4th, 5th, 6th, 7th, and 8th District of Columbia Militia Battalion Infantry. (See the District of Columbia militia).
Organised at Washington D. C. in April 1861

Three months Volunteers

First Maine Infantry: Col. N J Jackson
The 1st Maine Infantry was organised at Portland, Maine, on 28 April, 1861, and was mustered in United States service for three months on 3 May, 1861. The regiment encamped at Camp Washburn, near Westbrook, Maine, and was ordered to proceed to Washngton D. C. on board the steamer Bay State on 1 June, 1861. The 1st Maine Infantry arrived at Washngton D. C. via New York City; Philadelphia, Pennsylvania; and Baltimore, Maryland, on 3 June, 1861. The regiment encamped at Camp Jackson, Meridan Hill, Washington D. C., on 7 June, 1861. The regiment was ordered to across the Potomac River on 21 July, 1861, and the ordered was countermanded. The 1st Maine Infantry was ordered to remain in the defenses of Washington D. C. After the battle first of Bull Run the regiment was ordered to guard the Long Bridge, Washngton D. C., and was mustered out on 5 August, 1861.
Mustered in United States service for three months on 3 May, 1861, and arrived at Washington D. C. on 3 June, 1861

First New Hampshire Infantry: Col. M Tappan
The 1st New Hampshire Infantry was organised at Concord, New Hampshire, and mustered in United States service for three months on 1 May, 1861. The regiment was ordered to Washington D. C. on 25 May, 1861, and encamped at Kalorama Heights, Washington D. C., at 1.30 AM on28 May, 1861. The 1st New Hampshire Infantry was ordered to Rockville, Maryland, under the command of Colonel C P Stone, to secure the area of Maryland along the Potomac River northwest of Washington D. C. on 10 June, 1861 (See the Rockville Expedition). The regiment was ordered to Camp Lincoln, near Rockville, Maryland, on 12 June, 1861, and was ordered to Poolesville, Maryland, on 14 June, 1861. Five companies, under the command of Lieutenant Colonel T J Whipple, were ordered to Conrad's Ferry, Maryland, on 17 June, 1861, and five companies remained at Poolesville, Maryland, under the command of Colonel M Tappan. The 1st New Hampshire Infantry was ordered to Camp Goodwin, near the Monocacy River on 3 July, 1861, and arrived on 4 July, 1861. The regiment was ordered to Camp Berry, near Point of Rocks, Maryland, on 5 July, 1861, and arrived at Sandy Hook, Maryland, opposite Harpers Ferry, Virginia, on 6 July, 1861. The 1st New Hampshire Infantry was ordered to join the Army of the Upper Potomac on 6 July, 1861, and encamped near Sharpsburg, Maryland, on 6 July, 1861. The regiment arrived at Williamsport, Maryland, on 7 July, 1861, and was ordered across the Potomac River at Williamsport, Maryland, at 4 PM the same day. The 1st New Hampshire Infantry arrived at Martinsburg, Virginia, at 10 AM on 8 July, 1861, and was temporarily assigned to the Seventh Brigade, Second Division, Army of the Upper Potomac. The regiment was reassigned to Seventh Brigade, Third Division, Army of the Upper Potomac, on 10 July, 1861 (See the Seventh Brigade, Third Division, Army of the Upper Potomac). The 1st New Hampshire Infantry was ordered to Bunker Hill, Virginia, on 15 July, 1861, and proceeded to Charlestown, Virginia, on 17 July, 1861. The regiment was ordered to Harpers Ferry, Virginia, at 3 AM on 21 Juy, 1861, and arrived the same day. The 1st New Hampshire Infantry was mustered out at Concord, New Hampshire, on 9 August, 1861.
Mustered in United States service for three months on 1 May, 1861

Third Massachusetts Battalion Rifles, Company D, Dodd's Rifles or Carvers: Capt. A Dodd
Dodd's Rifles or Dodd's Carvers, under the command of Captain A Dodd, was organised at Boston, Massachusetts, on 19 April, 1861, and was ordered to Washington D. C. on board the steamer Cambridge via Fort Monroe, Old Comfort Point, Virginia, on 2 May, 1861. The company arrived at Washington D. C. on 5 May, 1861, and was ordered to Fort McHenry, Baltimore Harbour. Dodd's Rifles was assigned to the 3rd Massachusetts Battalion Rifles, Company D, on 15 May, 1861, and was mustered in United States servicefor three months on 16 May, 1861. The company was mustered out at Worcester, Massachusetts, on 3 August, 1861 (See the 3rd Massachusetts Battalion Rifles).
Mustered in United States service for three months on 16 May, 1861, and arrived at Washington D. C. on 5 May, 1861

Sixth Massachsetts Infantry: Col. E F Jones
The 6th Massachusetts Infantry was organised at Lowell, Massachusetts, and was mustered in United States service for three months on 16 April, 1861. Governor J A Andrew assigned Brigadier General B Butler to command the Third Brigade, Second Division, Massachusetts State Militia, and included the 3rd Massachusetts Infantry, the 4th Massachusetts Infantry, the 6th Massachusetts Infantry, and the 8th Massachusetts Infantry (See the 8th Massachusetts Infantry). The regiment was ordered to Washington D. C. on 17 April, 1861, and arrived at Philadelphia, Pennsylvania, via New York City at 7 PM on 18, April, 1861. The 6th Massachsetts Infantry and ten companies of the Washington Brigade, under the command of Colonel W S Small, arrived at Baltimore, Maryland, on 19 April, 1861, and was attacked by a mob at Baltimore City, Maryland (See the 27th Pennsylvania Infantry). The regiment arrived at Washington D. C. at 5 PM on 19 April, 1861, and was ordered to guard the capital. The 6th Massachsetts Infantry was ordered to Relay House, Maryland, on 4 May, 1861, and a detachment of 500 men were ordered to Baltimore City, Maryland, under the command of Brigadier General B F Butler, Massachusetss Miltia, on 13 May, 1861 (See the Department of Annapolis). The 6th Massachsetts Infantry was ordered to return to Relay House, Maryland, on 16 May, 1861, and was mustered out at Boston, Massachusetts, on 2 August, 1861.
Mustered in United States service for three months on 16 April, 1861, and arrived at Washington D. C. at 5 PM on 19 April, 1861

Twenty-fifth Pennsylvania Infantry: Col. H L Cake
The Ringgold Light Artillery, the Logan Guards, the Washington Artillery, the National Light Infantry, and the Allen Rifles were designated as the First Defenders and were ordered to proceed by railroad to Washington D. C. via Baltimore, Maryland, at 9 AM on 18 April, 1861 (See 25th Pennsylvania Infantry). The First Defenders arrived at Washington D. C. at 6 PM on 18 April, 1861. The 25th Pennsylvania Infantry was organised on 6 June, 1861, and Companies B, E, and H were assigned to Fort Washington, Maryland, under the command of Brevet Major J A Haskin, 1st United States Artillery; Companies A and C were assigned to the Arsenal, Washington D. C., under the command of Captain J A Dahlgren, United States Navy; and Companies D, F, G, I, and K, under the command of Lieuetenant Colonel L Selheimer and Major J H Campbell, were ordered to Edward's Ferry, Maryland, at 3 PM on 28 June, 1861, as part of an expedition to secure the area of Maryland along the Potomac River northwest of Washington D. C., under the command of Colonel C P Stone (See the Rockville expedition). The 25th Pennsylvania Battalion Infantry was assigned to the Seventh Brigade, Third Division, Army of the Upper Potomac, on 10 July, 1861 (See the Seventh Brigade, Third Division, Army of the Upper Potomac).
Companies A, B, C, D, E, G, and H were mustered in United States service for three months on 18 April, 1861, and arrived at Washington D. C. on at 7 PM on 18 April, 1861. Companies F, I, and K were mustered in on 2 May, 1861, and arrived at Washington D. C. in May 1861

Jackson Horse Guards: Capt. T C Devin
The Jackson Horse Guards, 1st New York State Militia Cavalry, Company A, was organised at New York City and was ordered to proceed to Washington D. C. on 3 July, 1861. The company was mustered in United States service for three months at Washington D. C., under the command of Captain T C Devin, lieutenant colonel, 1st New York State Militia Cavalry, on 14 July, 1861. The Jackson Horse Guards was assigned to duty as Provost Guard in the defenses of Washington D. C. and was mustered out on 23 October, 1861.
Mustered in United States service for three months on 14 July, 1861, and ordered to Washington D. C. on 3 July, 1861

Fifth New York State Militia: Col. C Schwarzwaelder
The 5th New York State Militia was organised at New York City with eight companies and was ordered to proceed to Washington D. C., on 28 April, 1861. The regiment was mustered in United States service for three months at Annapolis, Maryland, on 1 May, 1861. The 5th New York State Militia was ordered to relieve the 69th New York State Militia which was assigned to guard the railroad between Annapolis Junction and Annapolis, Maryland, on 3 May, 1861 (See the 69th New York State Militia). The 20th New York State Militia was ordered to relieve the 5th New York State Militia at Camp Reynolds, Annapolis Junction, Maryland, by Brigadier General B F Butler, Massachusetts Militia, on 11 May, 1861, and the 5th New York State Militia was ordered to proceed to Washington D. C. (See the 20th New York State Militia). The 5th New York State Militia was ordered across the Potomac River, via the Aqueduct Bridge, Georgtown D. C., on 24 May, 1861 (See the Occupation of Arlington Heights and Alexandria). The 28th New York State Militia, the 69th New York State Militia and the 5th New York State Militia were temporarily assigned to the Aqueduct Brigade, under the command of Colonel D Hunter, in May 1861, and were assigned to the construction of Fort Corcoran, Arlington Heights, Virginia. The 2nd New York State Militia, Company G (1st), was transferred to the 5th New York State Militia, Company K, under the command of Captain L Jaehrling, on 28 May, 1861 (See the 2nd New York State Militia). The 5th New York State Militia, and the 12th New York State Militia, under the command of Major General C W Sandford, New York Militia, was ordered to join the Army of the Upper Potomac on 7 July, 1861, and arrived at Camp Meigs, near Martinsburg, Virginia, on 10 July, 1861. The regiment was assigned to the Eighth Brigade, Third Division, Army of the Upper Potomac, under the command of Acting Brigadier General D Butterfield, 12th New York State Militia (See the Eighth Brigade, Third Division, Army of the Potomac). The 5th New York State Militia was ordered to Bunker Hill, Virginia, on 15 July, 1861, and was ordered to proceed to Charlestown, Virginia, on 17 July, 1861. The regiment was ordered to Harpers Ferry, Virginia, on 21 July, 1861, and was assigned to the First Brigade, Army of the Shenandoah, under the command of Colonel G H Thomas, 2nd United States Cavalry, at Sandy Hook, Maryland, on 29 July, 1861. The 5th New York State Militia was mustered out on 7 August, 1861.
Mustered in United States service for three months on 1 May, 1861, and arrived at Washington D. C. on 11 May, 1861

Seventh New York State Militia: Col. M Lefferts
The 7th New York State Militia was organised at New York City and was ordered to Washington D. C. on 19 April, 1861. The regiment arrived at Philadelphia, Pennsylvania, on 20 April, 1861. The 8th Massachusetts Infantry, under the command of Brigadier General B F Butler, Massachusetts Mmilitia, was stationed at Philadelphia, Pennsylvania, and Brigadier General B F Butler requested the 7th New York State Militia to accompany the 7th New York State Militia to Washington D. C. via Harve de Grace, Maryland, but Colonel M Lefferts declined (See the 8th Massachusetts Infantry). The 7th New York State Militia boarded the steamer Boston and arrived at Annapolis, Maryland, on 22 April, 1861. Companies B and F, and part of Company K with a brass howitzer, under the command of Captain B M Nevers, Jr., was ordered to to proceed to Annapolis Junction, Maryland, on 24 April, 1861, and Companies A, C, D, E, G, H, I, and the remainder of Company K and brass howitzer, under the command of Colonel M Lefferts, followed later the same day. The 7th New York State Militia arrived at Annapolis Junction, Maryland, on 25 April, 1861, and proceeded by railroad to Washington D. C., accompanied by the National Rifles, under the command of Captain J R Smead, and arrived at 12 PM the same day (See the District of Columbia militia). The regiment was mustered in United States service for three months on 27 April, 1861, and encamped at Camp Cameron, Meridian Hill, Washington D. C., between 2 and 23 May, 1861. The 7th New York State Militia was ordered across the Potomac River via the Long Bridge, Washington D. C. on 24 May, 1861 (See the Occupation of Arlington Heights and Alexandria). The regiment was mustered out at New York City on 3 June, 1861 .
Arrived at Washington D. C. on 25 April, 1861, and was mustered in United States service for three months on 27 April, 1861

Twelfth New York State Militia: Col. D Butterfield
The 12th New York State Militia was organised at New York City and was ordered to Washington D. C. on board the steamer Baltic, accompanied by First Lieutenant G W Synder, United States Corps Engineers, on 21 April, 1861. The regiment was accompanied by the 6th New York State Militia on board the steamer Columbia; and the 71st New York State Militia on board the steamer R R Cuyler, under the command of Lieutenant Colonel E D Keyes, United States Army. The 1st Rhode Island Detached Militia Infantry, under the command of Colonel A E Burnside, on board the steamer Coatzacoalcos joined Lieutenant Colonel E D Keyes' command at Fort Monroe, Old Comfort Point, Virginia (See the 1st Rhode Island Detached Militia Infantry). The 12th New York State Militia was transferred to the steamer Coatzacoalcos at Fort Monroe, Old Comfort Point, Virginia, and arrived at Annapolis, Maryland, on 23 April, 1861. The regiment disembarked on 26 April, 1861, and arrived by railroad at Washington D. C. via Annapolis Junction, Maryland, on 28 April, 1861. The 12th New York State Militia encamped at Camp Anderson, Franklin Square, Washington D. C., and was mustered in United States service for three months on 2 May, 1861. The regiment was ordered across the Potomac River, via the Long Bridge, Washington D. C., on 24 May, 1861 (See the Occupation of Arlington Heights and Alexandria). The 12th New York State Militia was relieved by the 2nd Connecticut Infantry at Roach's Mills, Virginia, and was ordered to return to Washington D. C. on 2 June, 1861 (See the 2nd Connecticut Infantry). The regiment and the 5th New York State Militia, under the command of Major General C W Sandford, New York Militia, was ordered to join the Army of the Upper Potomac on 7 July, 1861, and arrived at Camp Meigs, near Martinsburg, Virginia, on 10 July, 1861. The regiment was assigned to the Eighth Brigade, Third Division, Army of the Upper Potomac, under the command of Acting Brigadier General D Butterfield and Lieutenant Colonel W G Ward assumed command of the 12th New York State Militia (See the Eighth Brigade, Third Division, Army of the Upper Potomac).. The regiment was ordered to Bunker Hill, Virginia, on 15 July, 1861, and was ordered to proceed to Charlestown, Virginia, on 17 July, 1861. The 12th New York State Militia was ordered to Harpers Ferry, Virginia, on 21 July, 1861. The regiment was mustered out New York City on 5 August, 1861, and Colonel D Butterfield resigned his commission shortly afterwards. Colonel D Butterfield was appointed lieutenant colonel of the 12th United States Infantry.
Mustered in United States service for three months on 2 May, 1861, and arrived at Washington D. C. on 28 April, 1861

Seventeenth Pennsylvania Infantry: Col. F E Patterson
The 1st Pennsylvania Artillery was organised at Harrisburg, Pennsylvania, as infantry and mustered in United States service for three months on 25 April, 1861. The regiment was ordered to Perryville, Maryland, on 8 May, 1861, and was assigned to the post consisting of the 3rd United States Artillery, Light Company E, and five companies of the 3rd United States Infantry, under the command of Major T W Sherman, 3rd United States Artillery. The 1st Pennsylvania Artillery, the 3rd United States Battalion Infantry, and the 3rd United States Artillery, Light Company E, were ordered to Washington D. C. under the command of Major T W Sherman, on the 9 May, 1861, and arrived at 2 AM on 10 May, 1861. The 1st Pennsylvania Artillery encamped at Kalorama Heights, Washington D. C., and was redesignated the 17th Pennsylvania Infantry on 15 May, 1861. The regiment was ordered to Rockville, Maryland, under the command of Colonel C P Stone, to secure the area of Maryland along the Potomac River northwest of Washington D. C. on 10 June, 1861 (See the Rockville Expedition). The 17th Pennsylvania Infantry arrived at Rockville, Maryland, on 12 June, 1861, and was ordered to Poolesville, Maryland, on 14 June, 1861. Companies B and C, under the command of Captain D F Foley, Company B, were ordered to Edward's Ferry, Maryland, on 15 June, 1861, and twenty men, under the command of Captain J H Gardiner, Company C, were ordered to Conrad's Ferry, Maryland, on 18 June, 1861. Company I was ordered to Edward's Ferry, Virginia, on 18 June, 1861, and Company D on 29 June, 1861. The 17th Pennsylvania Infantry was ordered to Sandy Hook, Maryland, opposite Harpers Ferry, Virginia, on 1 July, 1861. The regiment arrived at Sandy Hook, Maryland, on 3 July, 1861, and was ordered to join the Army of the Upper Potomac at 3 AM on 6 July, 1861. The 17th Pennsylvania Infantry encamped near Sharpsburg, Maryland, on 6 July, 1861, and arrived at Williamsport, Maryland, on 7 July, 1861. The regiment was ordered across the Potomac River at Williamsport, Maryland, at 4 PM on 7 July, 1861, and arrived at Martinsburg, Virginia, at 10 AM on 8 July, 1861. The 17th Pennsylvania Infantry was temporarily assigned to the Seventh Brigade, Second Division, Army of the Upper Potomac, and was reassigned to Seventh Brigade, Third Division, Army of the Upper Potomac, on 10 July, 1861 (See the Seventh Brigade, Third Division, Army of the Upper Potomac). The regiment was ordered to Bunker Hill, Virginia, on 15 July, 1861, and proceeded to Charlestown, Virginia, on 17 July, 1861. The 17th Pennsylvania Infantry was ordered to Harpers Ferry, Virginia, at 3 AM on 21 Juy, 1861, and arrived the same day. The regiment was mustered out at Philadelphia, Pennsylvania, on 2 August, 1861.
Mustered in United States service for three months on 25 April, 1861, and arrived at Washington D. C. on 10 May, 1861

First Rhode Island Detached Militia Light Artillery or Providence Marine Corps Artillery: Capt. C H Tompkins
The 1st Rhode Island Detached Militia Artillery was ordered to proceed to Washington D. C. on 18 April, 1861, via New Jersey City and arrived at Easton, Pennsylvania, on 19 April, 1861. The company exchanged the six 6 pounder smoothbores for James rifles and arrived at Washington D. C. on 27 April, 1861. The 1st Rhode Island Detached Militia Artillery was mustered in United States service on 2 May, 1861, and was ordered to join the Army of the Upper Potomac on 8 June, 1861. First Lieutenant L L Janes, 2nd United States Artillery, was assigned to the company and the 1st Rhode Island Detached Militia Artillery was ordered to Chambersburg, Pennsylvania, on 10 June, 1861. The company arrived at Chambersburg, Pennsylvania, via Baltimore, Maryland, at 12 PM on 11 June, 1861. The 1st Rhode Island Detached Militia Artillery was assigned to the First Brigade, First Division, Army of the Upper Potomac, under the command of Colonel G H Thomas (See the Army of the Upper Potomac). The company was ordered to Williamsport, Maryland, on 15 June, 1861, and was ordered to return to Washington D. C. on 17 June, 1861. The 1st Rhode Island Detached Militia Artillery arrived at Camp Sprague, Washington D. C., on 19 June, 1861, and was ordered to rejoin the Army of the Upper Potomac at Martinsburg, Virginia, on 9 July, 1861. The company arrived at Williamsport, Maryland, and was escorted across the Potomac River by the 13th Pennsylvania Infantry in July 1861. The 1st Rhode Island Detached Militia Artillery was ordered to Bunker Hill, Virginia, on 15 July, 1861, and proceeded to Charlestown, Virginia, on 17 July, 1861. The company was ordered to Harpers Ferry, Virginia, at 3 AM on 21 Juy, 1861, and was relieved by the 2nd Rhode Island Light Artillery, at Sandy Hook, Maryland, on 29 July, 1861 (See the 2nd Rhode Island Light Artillery). The company was mustered out at Providence, Rhode Island, on 2 August, 1861.

First Lieutenant W H Reynolds was commissioned captain on 6 May, 1861, and proceeded to Providence, Rhode Island, to organise the 2nd Rhode Island Light Artillery at (See the 2nd Rhode Island Light Artillery). Private J Allen was assigned as an aeronaut with a corps of assistants, under the direction of Brigadier General I McDowell, and was ordered to make balloon reconnoisances of the enemy's positions (See the United States Corps Topographical Engineers, Balloon Detachment). Mustered in United States service for three months on 2 May, 1861, and arrived at Washington D. C. on 27 April, 1861

Three Years Volunteers

Third Vermont Infantry: Col. W F Smith
The 3rd Vermont Infantry was mustered in United States service for three years at Camp Baxter, St Johnsbury, Vermont, on 16 July, 1861, and was ordered to report to Major General N P Banks at Baltimore, Maryland, under the command of Lieutenant Colonel B N Hyde, on 18 July, 1861. The regiment arrived at Jersey City, New York, on board the steamer Elm City at 6 AM on 25 July, 1861, and was immediately ordered to Washington D. C. The 3rd Vermont Infantry arrived at Washington D. C. via Philadephia, Pennsylvania, and Baltimore, Maryland, on 26 July, 1861, and encamped at Camp Lyon, Georgetown Heights, D. C., on 27 July, 1861. Captain W F Smith, United States Corps Topographical Engineers, was assigned to command the 3rd Vermont Infantry and was assigned to the staff of Brigadier General I McDowell on 21 July, 1861. Colonel W F Smith was the senior officer at Camp Lyon, Georgetown Heights, D. C., and was assigned to command the 6th Maine Infantry, the 33rd New York Infantry, the 2nd United States Cavalry, Company H, and the New York Light Artillery, Company B, on 4 August, 1861 (See the New York Light Artillery, Company B). The 3rd Vermont Infantry was mustered out at Bailey's Crossroads, Virginia, on 19 June and 11 July, 1864.
Mustered in United States service for three years on 16 July, 1861, and arrived at Washington D. C. on 26 July, 1861

Sixth Maine Infantry: Col. A Knowles
The 6th Maine Infantry was organised at Portland, Maine, and a battalion, under the command of General J C Stevens, was assigned as Companies A, B, E, H, and I, and a battalion, under the command of Major A Hayen, as Companies C, D, F, G, and K. The regiment was mustered in United States service for three years on 15 July, 1861. The 6th Maine Infantry was ordered to proceed to Washington D. C. on 17 July, 1861, and arrived via New York City, Philadelphia, Pennsylvania, and Baltimore, Maryland, on 19 July, 1861. The regiment was encamped at Camp Lyon, Georgetown Heights, D. C., on 21 July, 1861. The 6th Maine Infantry was assigned to Colonel W F Smith's Brigade, Army of the Potomac, on 4 August, 1861, and was ordered across the Potomac River to construct Battery Vermont and a smaller earthwork in September 1861. The three years men were mustered out on 15 August, 1864, and the veterans and recruits transferred to the 7th Maine Infantry.
Mustered in United States service for three years on 15 July, 1861, and arrived at Washington D. C. on 19 July, 1861

Seventh Massachusetts Infantry: Col. N H Davis
The 7th Massachusetts Infantry was ordered to Camp Colony, near Taunton, Massachusetts, on 20 May, 1861, and was mustered in United States service for three years on 15 June, 1861. The regiment was ordered to Washington D. C. on board a steamer on 12 July, 1861, and arrived at New York City on 13 July, 1861. The 7th Massachusetts Infantry proceeded to Elizabethport, New Jersey, on board the steamer Kill von Kull and arrived at Washington D. C. via Harrisburg and Cockeysville, Pennsylvania, and Baltimore, Maryland, at 8 PM on 14 July, 1861. Company F was delayed at Baltimore, Maryland, and arrived in the morning on 15 July, 1861. The regiment encamped at Camp Colony, Kalorama Heights, Washington D. C., and was assigned to Colonel D N Crouch's Brigade, Army of the Potomac, on 4 August, 1861. Captain N H Davis, 2nd United States Infantry, was assigned to command the 7th Massachusetts Infantry on 4 September, 1861, and was mustered out in July, 1864 (See the United States Battalion Infantry).
Mustered in United States service for three years on 15 June, 1861, and arrived at Washington D. C. at 8 PM on 14 July, and Company F on 15 July, 1861

Ninth Massachusetts Infantry: Col. T Cass
The 9th Massachusetts Infantry was organised at Camp Wightman, Long Island, Boston Harbour, and was mustered in United States service for three years on 11 June, 1861. The regiment was ordered to Washington D. C. on 25 June, 1861, and arrived on board the steamer Ben de Ford on 29 June, 1861. The 9th Massachusetts Infantry encamped at Emmart's Farm, near Washington D. C., and after the first battle of Bull Run was ordered across the Potomac River to Arlington Heights, Virginia. The 9th Massachusetts Infantry was assigned to Brigadier General W T Sherman's Brigade, Army of the Potomac, on 4 August, 1861, and was mustered out on 21 June, 1864.
Mustered in United States service for three years on 11 June, 1861, and arrived at Washington D. C. on 29 June, 1861

Tenth Massachusetts Infantry: Col. H S Briggs
Captain H S Brigg was assigned to command the 8th Massachusetts Infantry, Company K, and was appointed ascolonel 10th Massachusetts Infantry on 12 June, 1861. The 10th Massachusetts Infantry was organised at Springfield, Massachusetts, and was mustered in United States service for three years on 21 June, 1861. The regiment was ordered to Washington D. C. on 16 July, 1861, and Companies C, B, D, G, and K, under the command of Colonel H S Brigg and Major W R Marsh, arrived at Washington D. C. on board the steamer S R Spaulding and Companies A, H, E, F, and I, under the command of Lieutenant Colonel J M Decker, on board the steamer Ben de Ford on 28 July, 1861. The 10th Massachusetts Infantry encamped at Kalorama Hill, Washington D. C., on 29 July, 1861, and was assigned to Brigadier General W T Sherman's Brigade, Army of the Potomac, on 6 August, 1861. The regiment was mustered out at Springfield, Massachsetts, on 6 July, 1864.
Mustered in United States service for three years on 21 June, 1861, and arrived at Washington D. C. on 28 July, 1861

Fourteenth Massachusetts Infantry: Col. W B Greene
The 14th Massachusetts Infantry was organised at Fort Warren, Boston Harbour, and was mustered in United States service for three years on 5 July, 1861. The regiment was ordered to report to Major General N P Banks, commanding the Army of the Upper Potomac, at Harpers Ferry, Virginia, on 7 August, 1861 (See the Army of the Upper Potomac). The 14th Massachusetts Infantry arrived at New York City on 8 August, 1861, and was ordered to Baltimore, Maryland, on 10 August, 1861. The regiment received orders to proceed to Washington D. C. and arrived at 11 PM on 10 August, 1861. The 14th Massachusetts Infantry encamped at Camp Kalorama, Meridian Hill, Washington D. C, on 11 August, 1861, and was ordered to Fort Albany, Prospect Hill, Virginia, on 18 August, 1861. Companies A, B, F, and I, were assigned as artillery, under the command of Major L P Wright; Companies C, D, F, and K as infantry, under the command of Lieutenant Colonel S C Oliver, were assigned to garrison duty at Fort Albany, Prospect Hill, Virginia; Company G at Fort Runyon, near the Long Bridge, Virginia; and Company H at Fort Jackson, Virginia. The 14th Massachusetts Infantry was assigned to Brigadier General W T Sherman's Brigade, Army of the Potomac, on 4 August, 1861, and redesignated the 1st Massachusetts Heavy Artillery on 1 January, 1862. The 1st Massachusetts Heavy Artillery was mustered out at Georges Island, Boston Harbour, Massachsetts, on 16 August, 1865.
Mustered in United States service for three years on 5 July, 1861, and arrived at Washington D. C. on 10 August, 1861

Twenty-six Pennsylvania Infantry: Col. W F Small
The 26th Pennsylvania Infantry was organised at Philadelphia, Pennsylvania, on 20 April, 1861, and was mustered in United State service for three years on 27 May, 1861. The 1st Regiment Infantry, Washington Brigade, commanded by Colonel W F Small, was disbanded after the Baltimore Expedition, Maryland, on 18 April, 1861, and some members were organised as the 26th Pennsylvania Infantry (See the 27th Pennsylvania Infantry). The 26th Pennsylvania Infantry was ordered to Washington D. C. on 15 June, 1861, and encamped at Kalorama Heights, Washington D. C. Company B, under the command of Captain J B Adams, was assigned to guard duty at quartermaster and commissionary stores, G street, Washington D. C.; Company H to guard duty at the Aqueduct Bridge, Georgetown D. C.; and Company A, under the comand of Captain S G Moffitt, at the Arsenal, Washington D. C. The 26th Pennsylvania Infantry was assigned to Brigadier General J Hooker's Brigade, Army of the Potomac, on 4 August, 1861, and was mustered out on 18 June, 1864.
Mustered in United States service for three years on 27 May, 1861

Fourteenth New York Infantry: Col. J McQuade
The 14th New York Infantry was mustered in United States service on 17 May, 1861, at Albany, New York, for two years and was ordered to New York City on 17 June, 1861. The regiment arrived at Washington D. C. via Harrisburg, Pennsylvania, and Baltimore, Maryland, on 21 June, 1861, and encamped at Camp Douglas, Meridian Hill, Washington D. C. The 14th New York Infantry was ordered across the Potomac River on 22 July, 1861, and encamped near Fort Corcoran, Virginia end of the Aqueduct bridge, on Arlington heights, Virginia. The regiment was assigned to guard duty at the ferry and the Aqueduct Bridge, Virginia, and was assigned to Brigadier General W T Sherman's Brigade, Army of the Potomac, on 4 August, 1861. The 14th New York Infantry was mustered out on 24 May, 1863.
Mustered in United States service for three years on 17 May, 1861, and arrived at Washington D. C. on 21 June, 1861

Nineteenth New York Infantry: Col. J S Clark
The 19th New York Infantry was organised at Elmira, New York, on 17 May, 1861, and mustered in United States service for three months on 22 May, 1861. The regiment arrived at Washington D. C., via Harrisburg, Pennsylvania, and Baltimore, Maryland, on 6 June, 1861, and encamped at Kalorama Heights, Washington D. C. The 19th New York Infantry was ordered to join the Army of the Upper Potomac on 6 July, 1861, and arrived at Martinsburg, Virginia, on 8 July, 1861. The regiment was temporarily assigned to the Second brigade, Second Division, Army of the Upper Potomac, under the command of Brigadier General G C Wynkoop, Pennsylvannia Militia (See the Second Brigade, Second Division, Army of the Upper Potomac). The 19th New York Infantry was reassigned to the Eighth Brigade, Third Division, Army of the Upper Potomac, under the command of Acting Brigadier General D Butterfield, on 10 July, 1861 (See the Eighth Brigade, Third Division, Army of the Upper Potomac). The regiment was ordered to Bunker Hill, Virginia, on 15 July, 1861, and was ordered to proceed to Charlestown, Virginia, on 17 July, 1861. The 19th New York Infantry was ordered to Harpers Ferry, Virginia, on 21 July, 1861, and was assigned to the First Brigade, Army of the Shenandoah, under the command of Colonel G H Thomas, 2nd United States Cavalry, at Sandy Hook, Maryland, on 29 July, 1861. The regiment was remustered in United States service for two years on 2 August, 1861. The regiment was reorganised as artillery and was redesignated the 3rd New York Light Artillery on 11 December, 1861. The two years men were mustered out at Elmira, New York, on 2 June, 1863, and the 3rd New York Light Artillery was mustered out between 20 June and 24 July, 1865.
Mustered in United States service for three years on 22 May, 1861, and arrived at Washington D. C. on 6 June, 1861. Remustered on 2 August, 1861, and redesignated the 3rd New York Light Artillery on 11 December, 1861

Ninth New York State Militia: Col. J W Stiles
The 9th New York State Militia was organised at New York City and was ordered to Washington D. C. on 28 May, 1861. The regiment encamped at Camp Cameron, near Columbia College, Washington D. C. and was ordered to Rockville, Maryland, under the command of Colonel C P Stone, to secure the area of Maryland along the Potomac River northwest of Washington D. C. on 10 June, 1861 (See the Rockville expedition). The 9th New York State Militia was ordered to Darnestown, Maryland, on 12 June, 1861, and two companies were ordered to Seneca Mills, Maryland and eight companies to Dawsonville, Maryland, on 17 June, 1861. The regiment was encamped at Poolesville, Maryland, on 1 July, 1861, and six companies were ordered to Sandy Hook, Maryland, and four companies to Point of Rocks, Maryland, on 1 July, 1861. Six companies arrived at Sandy Hook, Maryland, on 3 July, 1861, and four companies in the afternoon on 5 July, 1861. The 9th New York State Militia was ordered to join the Army of the Upper Potomac at 3 AM on 6 July, 1861, and encamped near Sharpsburg, Maryland, on 6 July, 1861. The regiment arrived at Williamsport, Maryland, on 7 July, 1861, and was ordered across the Potomac River at Williamsport, Maryland, at 4 PM the same day. The 9th New York State Militia arrived at Martinsburg, Virginia, at 10 AM on 8 July, 1861, and was temporarily assigned to the Seventh Brigade, Second Division, Army of the Upper Potomac. The regiment was reassigned to Seventh Brigade, Third Division, Army of the Upper Potomac, on 10 July, 1861 (See the Seventh Brigade, Third Division, Army of the Upper Potomac). Company K was organised as artillery at Rahway, New Jersey, under the command of Captain T B Bunting, and was assigned to the 9th New York State Militia at Martinsburg, Virginia. The 9th New York State Militia was ordered to Bunker Hill, Virginia, on 15 July, 1861, and proceeded to Charlestown, Virginia, on 17 July, 1861. The regiment was ordered to Harpers Ferry, Virginia, at 3 AM on 21 Juy, 1861, and arrived the same day. The 9th New York State Militia was assigned to the Third Brigade, Army of the Shenandoah, under the command of Colonel C P Stone, 14th United States Infantry, and Company K was assigned as light artillery to the First Brigade, Army of the Shenandoah, under Colonel G H Thomas, 2nd United States Cavalry, at Sandy Hook, Maryland, on 29 July, 1861. The regiment encamped at Camp RuItherford, near Buckeystown, Maryland, on 25 August, 1861, and Company K was organised as the 6th New York Independent Light Artillery on the same day. Company L was mustered in United States service on 31 August, 1861, and was assigned on 24 September, 1861. The 9th New York State Militia was redesignated the 83rd New York Infantry on 7 December, 1861, and Companies A, B, C, D, E, F, G, and H were mustered out at New York City on 23 June, 1864; Company I in August 1864; and Company L in September 1864.
Redesignated the 83rd New York Infantry on 7 December, 1861

Twenty-second New York Infantry: Col. W Phelps, Jr.
The 22nd New York Infantry was mustered in United States service on 6 June, 1861 at Troy, New York, for two years and was ordered to proceed to Washington D. C. by steamer on 28 June, 1861. The regiment arrived at Washington D. C. via Elizabethport, New Jersey; Harrisburg, Pennsylvania; and Baltimore, Maryland, at 1 AM on 1 July, 1861, and encamped at Meridian Hill, Washington D. C. The 22nd New York Infantry was ordered across the Potomac River to Arlington Heights, Virginia, on 24 July, 1861, and was assigned to Colonel E D Keyes' Brigade, Army of the Potomac, on 4 August, 1861. The regimentwas mustered out on 19 June, 1863.
Mustered in United States service for thwo years on 6 June, 1861, and arrived at Washington D. C. at 1 AM on 1 July, 1861

Twenty-third New York Infantry: Col. H C Hoffman
The 23rd New York Infantry was organised at Elmira, New York, on 10 May, 1861 and was mustered in United States service for two years on 2 July, 1861. The regiment was ordered to proceed to Washington D. C. on 5 July, 1861, and arrived via Harrisburg, Pennsylvania; Annapolis Junction and Baltimore, Maryland, on 7 July, 1861. The 23rd New York Infantry encamped at Camp Diven, Meridian Hill, Washington D. C. , and was ordered across the Potomac River to Fort Runyon, near the Long Bridge, Virginia, on 23 July, 1861. The regiment was assigned to Brigadier General D Hunter's Brigade, Army of the Potomac, on 4 August, 1861, and was mustered out on 26 June, 1863.
Mustered in United States service for two years on 2 July, 1861, and arrived at Washington D. C. on 7 July, 1861

Twenty-Fourth New York Infantry: Col. T Sullivan
The 24th New York Infantry was organised at Elmira, New York, on 16 May, 1861 and was mustered in United States service for two years on 2 July, 1861. The regiment was ordered to proceed to Washington D. C. on 2 July, 1861, and arrived via Harrisburg, Pennsylvania, and Baltimore, Maryland, on 3 July, 1861. The 24th New York Infantry encamped at Meridian Hill, Washington D. C., and was ordered across the Potomac River to Arlington Mills, Virginia, to construct breastworks on 22 July, 1861. The regiment was assigned to Colonel E D Keyes' Brigade, Army of the Potomac, on 4 August, 1861, and was mustered out on 29 May, 1863.
Mustered in United States service for two years on 2 July, 1861, and arrived at Washington D. C. on 3 July, 1861

Twenty-eighth New York Infantry: Col. D Donnelly
The 28th New York Infantry was organised at Albany, New York, on 18 May, 1861, and was mustered in United States service for two years on 22 May, 1861. The regiment was assigned to Camp Morgan, near Normans Kill, New York, on 30 May, 1861, and was ordered to proceed to Washington D. C. on 25 June, 1861. The 28th New York Infantry arrived at Washington D. C. via Elizabethport, New Jersey; Harrisburg, Pennsylvania; and Baltimore, Maryland, on 28 June, 1861, and encamped at New York Avenue, Washington D. C. The regiment was ordered to join the Army of the Upper Potomac on 6 July, 1861, and arrived at Martinsburg, Virginia, on 8 July, 1861 (See the Army of the Upper Potomac). The 28th New York Infantry was temporarily assigned to the Second brigade, Second Division, Army of the Upper Potomac, under the command of Brigadier General G C Wynkoop, Pennsylvannia Militia (See the Second Brigade, Second Division, Army of the Upper Potomac). The 28th New York Infantry was reassigned to the Eighth Brigade, Third Division, Army of the Upper Potomac, under the command of Acting Brigadier General D Butterfield, on 10 July, 1861 (See the Eighth Brigade, Third Division, Army of the Upper Potomac). The regiment was ordered to Bunker Hill, Virginia, on 15 July, 1861, and was ordered to proceed to Charlestown, Virginia, on 17 July, 1861. The 28th New York Infantry was ordered to Harpers Ferry, Virginia, on 21 July, 1861, and was assigned to the First Brigade, Army of the Shenandoah, under the command of Colonel G H Thomas, 2nd United States Cavalry, at Sandy Hook, Maryland, on 29 July, 1861. The regiment was mustered out at Albany, New York, on 2 June 1863.
Mustered in United States service for two years on 22 May, 1861, and arrived at Washington D. C. on 28 June, 1861

Thirtieth New York Infantry: Col. E Frisby
The 30th New York Infantry was organised at Troy, New York, for two years and was mustered in United States service on 1 June, 1861. The regiment arrived at Washington D. C., via Camden and Perth Amboy, New Jersey, on 29 June, 1861, and encamped at Camp Union, near Brightwood, Washington D. C., and was ordered across the Potomac River to Arlington Heights, Virginia, on 23 July, 1861. The 30th New York Infantry was assigned to Colonel E D Keyes' Brigade, Army of the Potomac, on 4 August, 1861, and was mustered out on 18 June, 1863.
Mustered in United States service for two years on 1 June, 1861, and arrived at Washington D. C. on 29 June, 1861

Thirty-third New York Infantry: Col. R F Taylor
The 33rd New York Infantry was organised at Elmira, New York, on 17 May, 1861, and was mustered in United States service for two years on 6 July, 1861. The regiment was ordered to proceed to Washington D. C. on 8 July, 1861, and arrived via Harrisburg, Pennsylvania, and Baltimore, Maryland, on 9 July, 1861. The 33rd New York Infantry encamped at Camp Granger, Seventh Street, Washington D. C., and was ordered to proceed across the Potomac River via the Long Bridge, Virginia, in the evening on 21 July, 1861. At the Treasury Building, Washington D. C., the order was countermanded and the regiment was ordered to return to Camp Granger. The 33rd New York Infantry was assigned to Colonel W F Smith's Brigade, Army of the Potomac, on 4 August, 1861, and proceeded to Camp Lyon, Georgtown Heights, D. C., on 6 August, 1861. The regiment mustered out on 2 June, 1863.
Mustered in United States service for two years on 6 July, 1861, and arrived at Washington D. C. on 9 July, 1861

Thirty-fourth New York Infantry: Col. W la Due
The 34th New York Infantry was organised at Albany, New York, and was mustered in United States service for two years on 15 June, 1861. The regiment was ordered to proceed to New York City on 3 July, 1861, and arrived at Washington D. C. via Harrisburg, Pennsylvania, and Baltimore, Maryland, on 5 July, 1861. The regiment encamped at Kalorama Hill, Washington D. C., and was ordered to Seneca Mills, Maryland, on 28 July, 1861. Companies B, G, and I, under the command of Major B Laflin, were assigned to picket duty at Great Falls, Maryland, and Companies A, C, D, E, F, H, and K encamped at Camp Jackson, near Seneca Mills, Maryland. The 34th New York Infantry was assigned to Brigadier General C P Stone's Corps of Observation, Army of the Potomac, on 4 August, 1861, and was mustered out on 30 June, 1863.
Mustered in United States service for two years on 15 June, 1861, and arrived at Washington D. C. on 5 July, 1861

Thirty-Fifth New York Infantry: Col. W C Brown
The 35th New York Infantry was organised at Elmira, New York, on 3 June, 1861, and mustered in United States service for two years on 11 June, 1861. The regiment was ordered to proceed to Washington D. C. at 1 PM on 11 July, 1861, and arrived via Harrisburg, Pennsylvania, and Baltimore, Maryland, on 13 July, 1861. The 35th New York Infantry encamped at Meridian Hill, Washington D. C., and was ordered to report to Brigadier General I McDowell at Arlington House, Virginia, on 23 July, 1861. The regiment was assigned to Brigadier General D Hunter's Brigade, Army of the Potomac, on 4 August, 1861, and was mustered out on 5 June, 1863.
Mustered in United States service for two years on 11 June, 1861, and arrived at Washington D. C. on 13 July, 1861

Thirty-Sixth New York Infantry: Col. C H Innes
The 36th New York Infantry was organised at Union Hall, New York City, and mustered in United States service for two years on 17 June, 1861. The regiment was ordered to Camp Reed, Rikers Island, New York, and was ordered to proceed to Washington D. C. on 12 July, 1861. The 36th New York Infantry arrived at Washington D. C. via Perth Amboy, New Jersey; Harrisburg, Pennsylvania; and Baltimore, Maryland, on 14 July, 1861, and encamped at Meridian Hill, Washington D. C. The regiment was ordered to Brightwood, near Washington D. C., on 6 August, 1861, and was assigned to Colonel D N Couch's Brigade, Army of the Potomac, on 4 August, 1861. The 36th New York Infantry was mustered out on 15 July, 1863.
Mustered in United States service for two years on 17 June, 1861, and arrived at Washington D. C. on 14 July, 1861

Forty-second New York Infantry: Col. W D Kennedy
The 42nd New York Infantry was mustered in United States service for three years at Long Island, New York, on 22 June, 1861. The regiment was ordered to Washington D. C. on 18 July, 1861, and arrived on 20 July, 1861. The 42nd New York Infantry was ordered to Poolville, Maryland, and was assigned to Brigadier General C P Stone's Brigade, Army of the Potomac, on 4 August, 1861. The regiment was mustered out on 13 July, 1865.
Mustered in United States service for two years on 22 June, 1861, and arrived at Washington D. C. on 20 July, 1861

Excelsior Brigade

Acting Brigadier General D E Sickles, New York militia

Seventieth New York Infantry: Col. W wight Jr,
The 70th New York Infantry was organised at Camp Scott, Staten Island, New York City, on 18 May, 1861, and was mustered in United States service for three years on 20 June, 1861, except Company G, which was mustered in United States service at Washington D. C. on 8 October, 1861. Colonel D E Sickles was temporarily assigned to command the 70th New York Infantry and Lieutenant Colonel W D Dwight, Jr, was promoted to colonel onl 1 July, 1861. After the first battle of Bull Run the 70th New York Infantry was ordered to Washington D. C. on 23 July, 1861, and arrived via Perth Amboy, New Jersey; Philadelphia, Pennsylvania; and Baltimore, Maryland, on 25 July, 1861. The regiment encamped at Camp McClellan, Meridian Hill, Washington D. C., and was ordered to Good Hope Heights, Maryland, opposite the Navy Yard, Washington D. C., on 8 August, 1861. The regiment was assigned to Acting Brigadier General D E Sickles' Provisional Brigade, Army of the Potomac, on 5 August, 1861. The three years men of the 2nd New York Infantry were transferred to the 70th New York Infantry on 11 May, 1863. The 70th New York Infantry was mustered out on 7 July, 1864, and the veterans and recruits transferred to the 86th New York Infantry.
Mustered in United States service for threeyears on 20 June, 1861, and arrived at Washington D. C. on 25 July, 1861

Seventy-first New York Infantry: Col. G B Hall
The 71st New York Infantry was organised at Camp Scott, Staten Island, New York City, on 18 May, 1861, and was mustered in United States service for three years between 20 June and 18 July, 1861. After the first battle of Bull Run the regiment was ordered to Washington D. C. on 23 July, 1861, and arrived via Perth Amboy, New Jersey; Philadelphia, Pennsylvania; and Baltimore, Maryland, on 25 July, 1861. The 71st New York Infantry encamped at Meridian Hill, Washington D. C., and was ordered to Good Hope Heights, Maryland, opposite the Navy Yard, Washington D. C., on 9 August, 1861. The regiment was assigned to Acting Brigadier General D E Sickles' Provisional Brigade, Army of the Potomac, on 5 August, 1861. The 71st New York Infantry was mustered out at New York City on 30 July, 1864, and the veterans and recruits were transferred to the 120th New York Infantry.
Mustered in United States service for three years on 18 July, 1861, and arrived at Washington D. C. at 5 AM on 25 July, 1861

Seventy-second New York Infantry: Col. N Taylor
The 72nd New York Infantry was organised at Camp Scott, Staten Island, New York City, on 18 May, 1861, and was mustered in United States service for three years on 20 and 21 June, 1861. After the first battle of Bull Run the regiment was ordered to Washington D. C. on 24 July, 1861, and arrived via Perth Amboy, New Jersey; Philadelphia, Pennsylvania; and Baltimore, Maryland, at 5 AM on 26 July, 1861. Companies H and L, were assigned on 25 October, 1861, and were mustered in United States service on 1 and 14 November, 1861, respectively. The 72nd New York Infantry encamped at Camp Marsh, Meridian Hill, Washington D. C., and was ordered to Good Hope Heights, Maryland, opposite the Navy Yard, Washington D. C., on 9 August, 1861. Compamy L was assigned to Companies A, I and K on 25 February, 1861, and regiment was assigned to Acting Brigadier General D E Sickles' Provisional Brigade, Army of the Potomac, on 5 August, 1861. Companies A, B, D, E, F, I, and K, under command of Lieutenant Colonel J Leonard, were mustered out on 19 and 20 June, 1864, and Companies G, C, and H, were mustered out on 2 and 20 July and 31 October, 1864, respectively. The veterans and recruits were transferred to the 120th New York Infantry.
Mustered in United States service for three years on 21 June, 1861, and arrived at Washington D. C. on 26 July, 1861

The Excelsior Brigade was organised at New York Cty, by Colonel D E Sickles in April 1861 and was ordered to procceed to Camp Scott, Staten Island, New York City in May 1861. The 1st Regiment Infantry, the 2nd Regiment Infantry, and the 3rd Regiment Infantry were intially organised and were joined by the 4th Regiment Infantry, known as the 2nd Fire Zouaves, under the commanded by Colonel W R Brewster, and the 5th Regiment Infantry, under the command of Colonel C Graham. Colonel D E Sickles was assigned as acting brigadier general to command the Excelsior Brigade and was promoted to brigadier general, United States Volunteers, on 3 September, 1861. Lieutenant Colonel W Dwight, Jr., was promted to colonel, 70th New York Infantry, on 1 July, 1861. After the first battle of Bull Run the Excelsior Brigade was immediately ordered to Washington D. C. and the 70th New York Infantry proceeded via Perth Amboy, New Jersey; Philadelphia, Pennsylvania; and Baltimore, Maryland, on 23 July, 1861, and was followed by the 71st New York Infantry and 72nd New York Infantry. The 70th New York Infantry, the 71st New York Infantry, 72nd New York Infantry, and the 79th New York State Militia were assigned d to a temporary brigade, under the command of Acting Brigadier General D E Sickles, with on 5 August, 1861, and was ordered to Good Hope Heights, Maryland, opposite the Navy Yard, Washington D. C., on 9 August, 1861 (See the 79th New York State Militia). The 73rd New York Infantry, was ordered to Washington D. C. on 8 October, 1861, and the 74th New York Infantry on 20 August, 1861. The 73rd New York Infantry and the 74th New York Infantry were assigned to the brigade at Good Hope Heights, Maryland. The 1st Regiment Infantry, the 2nd Regiment Infantry, 3rd Regiment Infantry, 4th Regiment Infantry, and the 5th Regiment Infantry were redesignated the 70th New York Infantry, the 71st New York Infantry, the 72nd New York Infantry, 73rd New York Infantry, the 74th New York Infantry, and the 75th New York Infantry repectively on 11 December, 1861.

First New York Cavalry, Company C: Capt. W H Boyd
The First New York Cavalry, Company C, was mustered in United States service at New York City for three years on 19 July, 1861, under the command of Colonel A T McReynolds, and arrived at Washington D. C in the afternoon on 22 July, 1861. Companies A, B, D, E, F, G, H, I, and K were stationed at New York City and were mustered in United states service between 16 July and 31 August, 1861. The company encamped at Camp Meigis, East Capital Hill, Washington D. C., on 23 July, 1861, and was assigned to Brigadier General W B Franklin's Brigade, Army of the Potomac, on 4 August, 1861.
Mustered in United States service for three years on 19 July, 1861, and arrived at Washington D. C. on 22 July, 1861

Sturgis Rifles: Capt. J Steele
The Sturgis Rifles was an independent company organised at Chigago, Illinois, under the command of Captain J Steele, in April 1861 and was mustered in United States service on 6 May, 1861. The company was assigned to duty a Major General G B McClellan's bodyguard and arrived at Washington D. C. on 26 July, 1861. The Sturgis Rifles was assigned as provost or city guard, under the command of Colonel A Porter, 16th United States Infantry, until 10 March, 1862. The company was mustered out at Washington D. C. on 27 November, 1863.
Mustered in United States service for three years on 6 May, 1861, and arrived at Washington D. C. on 26 July, 1861

United states Regular Army

United States Corps Engineers, Company A: First Lt. J C duane
The United States Corps Engineers, Company A, and the 5th United States Artillery, Light Company D, stationed at the West Point Military Academy, New York, arrived at Washington D. C. on 18 January, 1861 (See the 5th United States Artillery, Light Company D). The company was ordered to Fort Pickens, Florida, as part of a relief expedition on 2 April, 1861, and proceeded on board the steamer Atlantic on 7 April, 1861 (See the Fort Pickens Relief Expedition). The United States Corps Engineers, Company A, arrived at Fort Pickens, Florida, on 17 April, 1861.
Arrived at Washington D. C. on 18 January, 1861

First United States Infantry, Company I: Captain J H King
The 1st United States Infantry, Company I, was stationed at San Antonio Barracks, Texas, under the command of Lieutenant Colonel W Hoffman, 8th United States Infantry, and evacuated the post on 16 February, 1861. The company arrived at Indianola, Texas, on 28 March, 1861, and was ordered to proceed to New York Harbour on board the steamer Coatzacoalcos on 31 March, 1861. The 1st United States Infantry, Company I, arrived at Fort Hamilton, New York Harbour, on 17 April, 1861, and was ordered to Washington D. C on 13 April, 1861. The company arrived at Washington D. C on 14 April, 1861, and was assigned to duty at the Arsenal, Washington D. C. The 1st United States Infantry, Company I, was relieved on 23 April, 1861, and was encamped at E street, Washington D. C. The company was ordered to return to Fort Hamilton, New York Harbour, on 2 May, 1861.
Arrived at Washington D. C. on 14 April, 1861

First United States Artillery, Company D: Brevet Maj. J A Haskin
On 6 January, 1861, Governor T O Moore ordered Major General J L Lewis, commanding the First Division, Louisiana State militia, to order a detachment, under the command of Captain J B Walton, to proceed on board the steamer National to Baton Rouge, Louisiana, and seize the Federal arsenal and barracks. (See the Washington Battalion Artillery). Brevet Major J A Haskin, commanding the 1st United States Artillery, Company D, evacuated Baton Rouge, Louisiana, on 13 January, 1861, and arrived at Fort McHenry, Baltimore Harbour, on 30 January, 1861. The company was ordered to Washington D. C. on 2 February, 1861, and encamped at B street, Washington D. C., the same day. The 1st United States Artillery, Company D, was assigned to garrison duty at Fort Washington, Maryland, under the command of Brevet Major J A Haskin, between 15 April and 20 December, 1861.
Arrived at Washington D. C. on 2 February, 1861

Second United States Artillery, Company K: Capt. H A Allen
The 2nd United States Artillery, Company K, was stationed at Plattsburgh Barracks, New York, and was ordered to proceed to Washington D. C. on 24 January, 1861. The company arrived at Washington D. C. on 1 February, 1861, and was ordered to Fort Pickens, Florida, as part of a relief expedition on board the steamer Illinois on 9 April, 1861 (See the Fort Pickens Relief Expedition). The 2nd United States Artillery, Company K, arrived at Fort Pickens, Florida, on 19 April, 1861, and remained until May 1864. Brevet Lieutenant Colonel M Burke, 2nd United States Artillery, commanded the post at Plattsburgh Barracks, New York.
Arrived at Washington D. C. on 1 February, 1861

Second United States Artillery, Company H: Bvt. Lt. Col. H Brooks
The 2nd United States Artillery, Company H, the 2nd United States Artillery, Light Company A, under the command of Captain W F Barry, and the 1st United States Artillery, Company I, under the command of Brevet Lieutenant Colonel J B Magruder, evacuated Fort Leavenworth, Kansas, on 8 January, 1861. Brevet Lieutenant Colonel J B Magruder commanded the post at Fort Leavenworth, Kansas, and arrived at Harrisburg, Pennsylvania, on 16 January, 1861. Brevet Colonel H Brown, 4th United States Artillery, ordered the 2nd United States Artillery, Company H, and the 1st United States Artillery, Company I, to Fort McHenry, Baltimore Harbour, and the 2nd United States Artillery, Light Company A, was ordered to Washington D. C. The 2nd United States Artillery, Company H, was ordered to Washington D. C. on 1 February, 1861, and the company was ordered to proceed to Fort Pickens, Florida, as part of a relief expedition on board the steamer Illinois on 9 April, 1861 (See the Fort Pickens Relief Expedition). The 2nd United States Artillery, Company H, arrived Fort Pickens, Florida, on 19 April, 1861, and remained until May 1864. Captain H Brooks was promoted to major, 2nd United States Artillery, on 28 April, 1861
Arrived at Washington D. C. on 1 February, 1861

Fourth United States Artillery, Light Company F: Capt. D D Perkins
The 4th United States Artillery, Light Company F, and a detachment of the 2nd United States Artillery, Company I, under the command of Captain J C Pemberton, was stationed at Fort Ridgley, Minnesota, and was ordered to proceed to Harrisburg, Pennsylvania, on 13 April, 1861. The company arrived via St Paul, Minnesota, on 18 April, 1861, and was ordered to Baltimore, Maryland, at 9 AM the same day. The 4th United States Artillery, Light Company F, was assigned as infantry and was accompanied by the First Defenders (See the 25th Pennsylvania Infantry). The 4th United States Artillery, Light Company F, was arrived at Baltimore City, Maryland, and was assigned to garrison duty at Fort McHenry, Baltimore Harbour. The company was ordered to Washington D. C. and encamped at E street, Washington D. C., and was ordered to relieve the 1st United States Infantry, Company I, at the Arsenal, Washington D. C., on 23 April, 1861. Captain J C Pemberton resigned his commission on 29 April, 1861, and was appointed lieutenat colonel in the Confederate States Army and on 17 May, 1861. First Lieutenant D D Perkins was promoted to captain, 4th United States Artillery, and Lieutenant General W Scott ordered the 4th United States Artillery, Light Company F, and the 3rd United States Battalion Infantry, under the command of Colonel D S Miles, Second United States Infantry, to join the Army of the Upper Potomac at Chambersburg, Pennsylvania, on 4 June, 1861 (See the United States Battalion Infantry). The company assigned four 6 pounder pieces and two 12 pounder howitzers at Carlisle Barracks, Pennsylvania, and arrived at Chambersburg, Pennsylvania, on 9 June, 1861. The company was assigned to the Fourth Brigade, Second Division, Army of the Upper Potomac, under the command of Colonel D S Miles, on 10 June, 1861 (See the Fourth Brigade, Second Division, Army of the Upper Potomac). A section of the 4th United States Artillery, Light Company F, under the command of Captain E McK Hudson, was assigned to the Sixth Brigade, Second Divison, Army on 2 July, 1861, and was supported by the Philadelphia City Cavalry, First Troop, during the skirmish at Falling Waters, Hoke's Run. (See the Sixth Brigade, Second Divison, Army of the Upper Potomac). Another section of the 4th United States Artillery, Light Company F, under the command of Capatin D D Perkins, was assigned to the First Brigade, First Divison, Army of the Upper Potomac, and was supported by the 23rd Pennsylvania Infantry during the skirmish at Falling Waters, Hoke's Run (See the First Brigade, First Divison, Army of the Upper Potomac). The company was ordered to Bunker Hill, Virginia, on 15 July, 1861, and proceeded to Charlestown, Virginia, on 17 July, 1861. The 4th United States Artillery, Light Company F, was ordered to Harpers Ferry, Virginia, and was assigned to the First Brigade, Army of the Shenandoah, at Sandy Hook, Maryland, on 29 July, 1861 (See the Seventh Brigade, Third Division, Army of the Upper Potomac).

Second United States Cavalry, Company D: Capt. W P Chambliss
The 2nd United States Cavalry, Company D, evacuated Fort Chadbourne, Texas, under the command of Captain I N Palmer, on 21 February, 1861, and arrived at Indianola, Texas, on 22 March, 1861. The company proceeded to New York Harbour on board the steamer Coatzacoalcos on 31 March, 1861, and arrived on 11 April, 1861. Lieutenant General W Scott ordered Major G H Thomas to order Companies D and H, under the command of Captain I N Palmer, to Washington D. C. and arrived on 17 April, 1861. The company was was assigned to duty guarding the Treasury Building and the defenses of Washington D. C. during the first battle of Bull Run (See the United States Battalion Cavalry).
Arrived at Washington D. C. on 17 April 1861

Second United States Cavalry, Company H: Capt. K Garrard
The 2nd United States Cavalry, Company H, evacuated Fort Chadbourne, Texas, under the command of Captain I N Palmer, on 21 February, 1861, and arrived at Indianola, Texas, on 22 March, 1861. The company was ordered to proceed to New York Harbour on board the steamer Coatzacoalcos on 31 March, 1861, and arrived on 11 April, 1861. Lieutenant General W Scott ordered Major G H Thomas to ordered Companies D and H, under the command of Captain I N Palmer, to Washington D. C. and arrived on 17 April, 1861. A detachment of the 2nd United States Cavalry, Company H, under the command of Captain W T Magruder, 1st United States Dragoons, was ordered to Rockville, Maryland, under the command of Colonel C P Stone, to secure the area of Maryland along the Potomac River northwest of Washington D. C. on 10 June, 1861 (See the Rockville Expedition). The detachment arrived at Rockville, Maryland, at 11 AM on 10 June, 1861, and was ordered to proceed on the Darnestown Road, Maryland, on 11 June, 1861. Twenty men were ordered to Edward's Ferry, Maryland, on 15 June, 1861, and the detachment was ordered to return to Washington D. C. on 2 July, 1861. The 2nd United States Cavalry, Company H, was assigned to duty guarding the Treasury Building and the defenses at Washington D. C. during the first battle of Bull Run. The company was assigned to Colonel W F Smith's Brigade, Army of the Potomac, on 4 August, 1861 (See the United States Battalion Cavalry).

Captain W T Magruder was on a leave of absence in Washington D. C. and was on detached duty as assistant adjutant general either at Brigadier General I McDowell's headquarters or at the war department during the first battle of Bull Run. Captain W T Magruder was ordered to return to Fort Walla Walla, Washington Territory, to assume command of the 1st United States Dragoons, Company E, on 6 September, 1861. Captain W T Magruder resigned his commission on 1 October, 1862, and was commission a captain, Confederate States Army.Arrived at Washington D. C. on 17 April, 1861

Sources

"By 9 a. m., Porter had these five companies, comprising 482 officers and men, mustered into the service of the United States, loaded on board a Northern Central Railway train and started for Washington. They had for company on the train forty-five regulars of the 4th Artillery en route for Fort McHenry, under the command of Captain J. C. Pemberton, that recreant son of Pennsylvania who, deserting the flag of his country, joined the Southern Confederacy, became one of its Lieut. Generals, and is now only known to fame as having unconditionally surrendered his command at Vicksburg to General Ulysses S. Grant."

A few acts and actors in the tragedy of the Civil War in the United States, by William Bender Wilson

"The only regular troops near the capital of the country were 300 or 400 marines at the marine barracks, and 3 officers and 53 men of ordnance at the Washington arsenal."

"Stone immediately set to work to organize the volunteers for the preservation of order in the District, and by mid-February was able to report that thirty-three companies of infantry and riflemen and two troops of cavalry were on the lists of the District volunteer force; and all had been uniformed, equipped, and put under frequent drill."

"Washington's or rather the District of Columbia's militia organisations mustered into the service of the United States, from April 9 to April 27, when enlistment solely for the District defense ceased, numbered 34 companies and 3,019 men."

Records of the Columbia Historical Society, Washington, D. C., Volume 60/62 (1960/1962), pp. 123–133: Military activities in Washington in 1861, by Elden E Billings

Supplement to the Official Records: Part II, Record of Events, Volume 63, Serial No.75: Record of events for First Rhode Island Light Artillery(Three months), May–August 1861, edited by James B Hewett

The Civil War papers of Lt. Colonel Newton T. Colby, New York Infantry, by Newton T Colby

History of the First Regiment of Heavy Artillery, Massachusetts volunteers, formerly the Fourteenth Regiment of Infantry, 1861–1865, by Alfred Seelye Roe and Charles Nutt

Vermont in the civil war: A history of the part taken by the Vermont soldiers and sailors in the war for the union, 1861–5, by G G Benedict

History of the First-Tenth-Twenty-ninth Maine Regiment: In service of the United States from 3 May, 1861, to 21 June, 1861, by Maj. John M. Gould

That body of brave men: The U. S. Regular Infantry and the Civil War in the West, by Mark Wells Johnson

The First New York, Lincoln, Cavalry from April 19, 1861, to July 7, 1865, by William H Beach, A. M., First Lieutenant and Adjutant

Lincoln's abolitionist general: The biography of David Hunter, by Edward A Miller

First in defense of the Union: The civil war history of the First Defenders, by John D Hoptak

New York in the War of Rebellion, 1861–1865, Volumes 1–4, by Frederick Phisterer

History of the Pennsylvania Volunteers, 1861–5, prepared in complience with acts of the legislation, Volume 1, by Samuel P Bates

The siege of Washington: The untold story of the twelve days that shook the Union, by John Lockwood and Charles Lockwood

A history of the national capital from its foundation through the period of the adoption of the organic act, Volume 2, by Wilhelmus Bogart Bryan

Massachusetts Register, 1862, containing a record of the Government and Institutions of the State, together with a very complete account of the Massachusetts Volunteers, Serial No.94, by Adams, Sampson & Co.

Biographical register of officers and graduates of the United States Military Academy, at West Point, N. Y., from its establishment, 16 March, 1802 to the army reorganisation of 1866–67, by Bvt. Major General George W Cullum, Colonel, Corps of Enginers, U. S. Army

Notes

On 2 January, 1861, Colonel C P Stone was assigned as inspector general to the District of Columbia by General W Scott, United States Army. The United States Army stationed at Washington D. C. included 300 to 400 members of the United States Marine Corps stationed at the Marine Barracks, Washington D. C. and three officers and fifty three men of the United States Ordnance Department at the Arsenal, Washington D. C. The District of Columbia Militia was organised as thirty-three infantry companies and two cavalry companies in February 1861 (See the (See District of Columbia militia). The military department of Washington D. C. was eastablished on 9 April, 1861, and included Maryland and the District of Columbia, under the command of Brevet Colonel C F Smith, United States Army. The department was increased to include Delaware and Pennsylvania, under the command of Major General R Patterson. On 14 April, 1861, C Clay, minister to Russia, and J H Lane, Kansas senator, organised the Clay Battalion Infantry and the Frontier Guards respectively and were assigned to guard duty at Washington D. C., uder the command of Major D Hunter, paymaster, United States Army. The District of Columbia State Militia was mustered in United States service for three months between 9 and 27 April, 1861, and General Orders No.3, Headquarters, D. C. Volunteers, on 3 May, 1861, organised the District of Columbia State Militia as eight infantry battalions and one cavalry company (See the District of Columbia Militia). The Ringgold Light Artillery, the Allen Infantry, the Logan Guards, the National Light Infantry, and the Washington Artillery arrived at Washington D. C. on 18 April, 1861, and were assigned to the 25th Pennsylvania Infantry (See 25th Pennsylvania Infantry). The 7th New York state Militia arrived at Washington D. C. on 25 April, 1861, and assigned to the defenses of Washington D. C.

Forty members of the United States Marine Corps, under Captain A S Taylor, were assigned to garrison duty at Fort Washington, Maryland, on 5 January, 1861, and the United States Navy was assigned to garrison duty at Fort Ellsworth, Shuters Hill, Virginia, between July and November, 1861.

Orders of Battle

• Defenses of Washington D. C.
  Brigadier General J F K Mansfield ›
• ‹ Ba ck
• ‹ Back to Army of Northeastern Virginia

The above painting, 'New York's Bravest', is by Don Troiani, modern America's finest historial artist.