The Fourth Alabama Painting by Don Troiani

Advance Of McDowell's army

Occupation of Arlington Heights and Alexandria

Major General C W Sandford, New York Volunteers
Major General C W Sandford, New York Volunteers, accompanied the centre column across the Potomac River at Long Bridge, Washington, D. C., at 2 AM on 24 May, 1861, and set up his headquarters at Arlington House, on Arlington Heights, Alexandria County, Virginia, the same day.

Advance Guard

COLONEL & INSPECTOR GENERAL C P STONE, District of Columbia Volunteers

First District of Columbia Militia Battalion Infantry: Maj. J McH Hollingsworth
The Anderson Rifles, Company A, was ordered across the Potomac River at the Chain or Falls Bridge, two and a half miles above Georgetown, D. C., at 10 PM on 23 May, 1861, and the Carrington Home Guard, the Potomac Light Infantry, and the Andrew Johnson Guards, under the command of Major J McH. Hollingsworth, at the Aqueduct Bridge, Georgetown, D. C., at 11.30 PM the same day (See the District of Columbia Militia, Department of Washington).
Third, Fourth, & Fifth District Columbia Militia Battalion Infantry, Detachments: Acting Maj. & Capt. J R Smead
The Constituational Guards, the National Rifles, and the Washington Light Battalion Infantry, Company E, under the command of Colonel C P Stone, 14th United States Infantry, were ordered to proceed by the Columbia Turnpike to Columbia Springs, Alexandria County, Virginia, at 1 AM on 24 May, 1861, and arrived at Four Miles Run, near Roach's Mills, Alexandria County, Virginia, the same day (See the District of Columbia Militia, Department of Washington).

Note: The Washington Light Battalion Infantry, Company A, was stationed on Maryland Avenue, Washington, D. C.; the Metropolitan Rifles, the Putnam Rifles, Company A; the National Rifles, the Turner Rifles, Company A; and the Union Regiment, Company F, at and near the Long Bridge, Washington, D. C.; and the Constituational Guards and the Washington Light Battalion Infantry, Company E, at the Virginia end, Long Bridge, Washington, D. C., in the evening on 23 May, 1861.

Centre Column

MAJOR & ACTING ADJUTANT GENERAL S P HEINTZELMAN, First United States Infantry

Seventh New York State Militia Infantry: Col. M Lefferts
The 7th New York State Militia Infantry was ordered across the Potomac River at the Long Bridge, Washington D. C., at 2 AM on 24 May, 1861, and arrived at Hugh's Tavern, near the Virginia end of the Long Bridge, Washington, D. C., in the morning the same day (See the Three Months' Volunteers, Department of Washington).
Twelfth New York State Militia Infantry: Col. D Butterfield
The 12th New York State Militia Infantry was ordered across the Potomac River at the Long Bridge, Washington, D. C., at 2 AM on 24 May, 1861, and arrived at Four Miles Run, near Roach's Mills, Alexandria County, Virginia, the same day (See the Three Months' Volunteers, Department of Washington).
Twenty-fifth New York State Militia Infantry: Col. M K Bryan
The 25th New York State Militia Infantry was ordered across the Potomac River at the Long Bridge, Washington, D. C., at 2 AM on 24 May, 1861, and arrived at Prospect Hill, near the Toll Gate on the Columbia Turnpike, at 4 AM the same day (See the 25th New York State Militia Infantry).
Second New Jersey Militia Infantry, Companies A, B, C, F, G, & H: Col. H M Baker
The 2nd New Jersey Militia Infantry, Companies A, B, C, F, G, and H, was ordered across the Potomac River at the Long Bridge, Washington D. C., under the command of Brigadier General T Runyon, at 2 AM on 24 May, 1861, and arrived at the bridge across the Chesapeake & Ohio Canal, on the Columbia Turnpike, near Columbia Springs, Alexandria County, Virginia, in the morning the same day (See the 2nd New Jersey Militia Infantry).
Third New Jersey Militia Infantry: Col. W Napton
The 3rd New Jersey Militia Infantry was ordered across the Potomac River at the Long Bridge, Washington, D. C., under the command of Brigadier General T Runyon, at 2 AM on 24 May, 1861, and arrived near Abingdon House, Gravelly Point, Alexandria County, Virginia, in the morning the same day (See the 3rd New Jersey Militia Infantry).
Fourth New Jersey Militia Infantry: Col. M Miller, Jr.
The 4th New Jersey Militia Infantry was ordered across the Potomac River at the Long Bridge, Washington, D. C., under the command of Brigadier General T Runyon, at 2 AM on 24 May, 1861, and arrived at the west side of the Alexandria & Washington Turnpike, two miles from the Long Bridge, Washington, D. C., in the morning the same day (See the 4th New Jersey Militia Infantry).

Attached

Second United States Cavalry, Company I: Capt. A G Brackett
The 2nd United States Cavalry, Company I, was ordered across the Potomac River at the Long Bridge, Washington, D. C., at 2 AM on 24 May, 1861, and arrived at the rear of the Arlington House, on Arlington Heights, Alexandria County, the same day (See the United States Battalion Cavalry).
Third United States Artillery, Light Company E, Section: First Lt. D R Ransom
A section of the 3rd United States Artillery, Light Company E, under the command of First Lieutenant D R Ransom, was ordered across the Potomac River at the Long Bridge, Washington, D. C., at 2 AM on 24 May, 1861, and proceeded by the Washington & Alexandria Turnpike to Alexandria, Virginia, the same day (See the 3rd United States Artillery, Light Company E).

Right Wing Column

CAPTAIN W H WOOD, Third United States Infantry, Company C
First Lieutenant W H Wood, 3rd United States Infantry, Company H, was appointed captain, 3rd United States Infantry, Company C, by General Orders No.24, War Department, Adjutant General's Office, Washington, D. C., on 22 May, 1861, dated, 11 April, 1861.

Fifth New York State Militia Infantry: COL. C Schwarzwaelder
The 5th New York State Militia Infantry was ordered across the Potomac River at the Aqueduct Bridge, Georgetown, D. C., at 2 AM on 24 May, 1861, and arrived at Camp Union, near the Georgetown & Falls Church Road between Arlington Heights and Balls Crossroads, via Rosslyn, Alexandria County, Virginia, the same day (See the Three Months' Volunteers, Department of Washington).
Fourteenth New York State Militia Infantry, Corps Engineers: Capt. R Burt
A detachment of forty-eight men of the 14th New York State Militia Infantry, Corps Engineers, under the command of Captain R Burt, was ordered across the Potomac River at the Aqueduct Bridge, Georgetown, D. C., at 2 AM on 24 May, 1861, and arrived near the Georgetown & Falls Church Road, on Arlington Heights, via Rosslyn, Alexandria County, Virginia, the same day (See the 14th New York State Militia Infantry).
Twenty-eighth New York State Militia Infantry: COL. M Bennett
The 28th New York State Militia Infantry was ordered across the Potomac River at the Aqueduct Bridge, Georgetown, D. C., at 2 AM on 24 May, 1861, and arrived at Camp Crooke, near the Georgetown & Falls Church Road, between Arlington Heights and Ball's Crossroads, via Rosslyn, Alexandria County, Virginia, the same day (See the 28th New York State Militia Infantry).
Sixty-ninth New York State Militia Infantry: COL. M Corcoran
The 69th New York State Militia Infantry was ordered across the Potomac River at the Aqueduct Bridge, Georgetown, D. C., at 2 AM on 24 May, 1861, and arrived at Camp Corcoran, near the Georgetown & Falls Church Road, on Arlington Heights, via Rosslyn, Alexandria County, Virginia, the same day (See the 69th New York State Militia Infantry).

Attached

President's Mounted Guards, Detachment: Second Lt. M S Smith
A detachment of the President's Mounted Guards, under the command of Second Lieutenant M S Smith, was ordered across the Potomac River at the Aqueduct Bridge, Georgetown D. C., at 2 AM on 24 May, 1861, and destroyed several bridges on the Alexandria, Loudoun & Hampshire Railroad above Ball's Crossroad, Alexandria County, Virginia, at 6 AM the same day (See the District of Columbia Militia, Department of Washington).
Second United States Cavalry, Company B: First Lt. C H Tompkins
The 2nd United States Cavalry, Company B, under the command of First Lieutenant C H Tompkins, was ordered across the Potomac River at the Aqueduct Bridge, Georgetown D. C., at 2 AM on 24 May, 1861, and arrived at the intersection of the Georgetown & Falls Church Road and the Alexandria, Loudoun & Hampshire Railroad via Rosslyn, Alexandria County, Virginia, the same day (See the United States Battalion Cavalry).
Third United States Artillery, Light Company E, Section: Second Lt. G W Dresser
A section of the 3rd United States Artillery, Light Company E, under the command of Second Lieutenant G W Dresser, 4th United States Artillery, Company L, was was ordered across the Potomac River at the Aqueduct Bridge, Georgetown, D. C., at 2 AM on 24 May, 1861, and the 3rd United States Artillery, Light Company E, was stationed between the Leesburg & Alexandria and Alexandria & Washington Turnpikes, near Alexandria, Virginia, on 31 May, 1861 (See the 3rd United States Artillery, Light Company E).

Left Wing Column

COLONEL O B WILLCOX, First Michigan Infantry

President's Mounted Guard, Squad & Guides: Capt. S W Owen
A squad of the President's Mounted Guard and guides, under the command of Captain S W Owen, was ordered across the Potomac River at the Long Bridge, Washington, D. C., 2 AM on 24 May, 1861, and arrived at Alexandria, Virginia, at 5 AM the same day (See the District of Columbia Militia, Department of Washington).
First Michigan Infantry & pioneers: COL. O B Willcox
The 1st Michigan Infantry was ordered across the Potomac River at the Long Bridge, Washington, D. C., at 2 AM on 24 May, 1861, and arrived at Alexandria, Virginia, at 5 AM the same day (See the 1st Michigan Infantry).
Eleventh New York Infantry: COL. E E Ellsworth
The 11th New York Infantry was ordered across the Potomac River by the steamers Baltimore and Mount Vernon at Giesboro Point, D. C., at 1 AM on 24 May, 1861, and arrived at King's Street Wharf, Alexandria, Virginia, at 4 AM the same day (See the 11th New York Infantry).

Attached

Second United States Cavalry, Company E: First Lt. J J SWeet
The 2nd United states Cavalry, Company E, under the command of Major G Stoneman, 1st United States Cavalry, was ordered across the Potomac River at the Long Bridge, Washington, D. C., at 2 AM on 24 May, 1861, and arrived at Alexandria, Virginia, at 5 AM the same day (See the United States Battalion Cavalry).
Third United States Artillery, Light Company E, Second Section: First Lt. G W Dresser
A section of the 3rd United States Artillery, Light Company E, under the command of First Lieutenant G W Dresser, 4th United States Artillery, was ordered across the Potomac River at the Long Bridge, Washington, D. C., at 2 AM on 24 May, 1861, and arrived at Alexandria, Virginia, at 5 AM the same day (See the 3rd United States Artillery, Light Company E). The 3rd United States Artillery, Light Company E, was stationed between the Leesburg & Alexandria and Alexandria & Washington Turnpikes, near Alexandria, Virginia, on 31 May, 1861.
Seventy-first New York State Militia Infantry, detachments of Companies D & E: CApt. H W Morris
A detachment of twenty men of the 71st New York State Militia Infantry, Company D, under the command of First Lieutenant G W Stow, on the steamer Baltimore and a detachment of twenty men of the 71st New York State Militia Infantry, Company E, under the command of First Lieutenant T B Prendergast, on the steamer Mount Vernon were ordered to proceed by the Anacostia River to Giesboro Point, Washington, D. C., under the command of Captain H W Morris, United States Navy, in the evening on 23 May, 1861 (See the 71st New York State Militia Infantry).
First Rhode Island Detached Militia Infantry, Detachment: Ensign L Tower
A detachment of twenty-six men of the 1st Rhode Island Detached Militia Infantry were assigned to guard duty and operating the ferries on the Potomac River in the morning on 24 May, 1861 (See the First Rhode Island Detached Militia Infantry).

Additional Troops

Fifth Massachusetts Infantry: Col. S C Lawrence
The 5th Massachusetts Infantry was ordered across the Potomac River at the Long Bridge, Washington, D. C., at 10 PM on 25 May, 1861, and arrived at Camp Andrew, near the Alexandria & Washington Turnpike, between Four Miles Run and Alexandria, Virginia, at 12 AM on 26 May, 1861 (See the 5th Massachusetts Infantry).
Eighth New York State Militia Infantry: Col. G Lyons
The 8th New York State Militia Infantry was ordered across the Potomac River at the Long Bridge, Washington, D. C., on 26 May, 1861, and arrived at the rear of Arlington House, near Arlington Heights, Alexandria County, Virginia, the same day (See the 8th New York State Militia Infantry).
First New Jersey Militia Infantry: COl. A J Johnson
The 1st New Jersey Militia Infantry was ordered across the Potomac River at the Long Bridge, Washington, D. C., in the evening on 26 May, 1861, and arrived at Camp Van Riper or Princeton, near Columbia Springs, Alexandria County, Virginia, the same day (See the First New Jersey State Militia Infantry).
Varian's Light Artillery, Eighth New York State Militia Infantry, Company I: Capt. J M Varian
Varian's Light Artillery was ordered across the Potomac River at the Long Bridge, Washington, D. C., in the morning on 27 May, 1861, and arrived at the near of Arlington House, near Arllington Heights, Alexandria County, Virginia, the same day (See Varian's Light Artillery).

Reserves

Fifth United States Artillery, Light Company D, Section: First Lt. A Ames
A section of the 5th United States Artillery, Light Company D, under the command of First Lieutenant A Ames, was stationed at the Aqueduct Bridge, Georgetown, D. C., as a reserve during the occupation of Arlington Heights, Alexandria County, and Alexandria, Virginia, on 24 May, 1861 (See the 5th United States Artillery, Light Company D).
First Rhode Island Detached Militia Infantry: Col. A E Burnside
The 1st Rhode Island Detached Militia Infantry was assigned as a reserve during the occupation of Arlington Heights, Alexandria County, and Alexandria, Virginia, on 24 May, 1861 (See the 1st Rhode Island Detached Militia Infantry).

Sources

"Colonel Stone had once again culled his District of Columbia battalions for volunteers willing to serve outside the District, and just after midnight he trotted a mounted squadron of them across the river on the Chain Bridge, well upstream of Georgetown. Galloping cross-country, he took the Virginia end of the Long Bridge from its guards, who might have set fire to it if they had heard the rumble of so many hooves from the Washington side of the bridge."

Mr Lincoln goes to war, by William Marvel

"Our regiment, as a body, did not participate in this advance, but it was ordered to hold itself in readiness to support the movement, if necessary. Fortunately, the services of the entire regiment were not needed, and the heights that commanded Washington were occupied without opposition."

Narrative of the campaign of the First Rhode Island Regiment, in the Spring and Summer of 1861, by Augustus Woodbury

"A detail of thirty men from the regiment was made today, and placed under command of Lieutenant Tower, of Company E, to operate a ferry for transporting troops across the river to Alexandria. They worked only nights, returning to camp at daylight in the morning. Company F furnished five men – Sergeant Burdick, John B. F. Smith, Andrew P. bashford, George R. White, and Peyton Randolph, all of whom had been sailors previous to enlistment in the army, and consequently wre familiar with that line of duty, and to them it was mere pastime."

History of Company F, 1st Regiment, R. I. Volunteers, during the Spring and Summer of 1861, by Charles H Clarke

Civil War to the Bloody End: The Life & Times of Major General Samuel P. Heintzelman, by Jerry D Thompson

Forgotten valor: The memoirs, journals, & Civil War letters of Orlando B Willcox, by Orlando B Willcox

Notes

Adjutant General & Colonel J K F Mansfield, United States Army, was assigned to command the Department of Washington between the 27 April and 25 July, 1861, and ordered the occupation of Arlington Heights, Alexandria County, and Alexandria, Virginia, in the evening on 23 May, 1861.

Chain or Falls Bridge, two and a half miles above Georgetown, D. C.

Chain Bridge, above Georgetown, D. C., to Alexandria County, Virginia, 1st District of Columbia Militia Battalion Infantry, 23-24 May, 1861: The Anderson Rifles, Company A, was ordered across the Potomac River at the Chain or Falls Bridge, two and a half miles above Georgetown, D. C., at 10 PM on 23 May, 1861, and the Carrington Home Guard, the Potomac Light Infantry, and the Andrew Johnson Guards, under the command of Major J McH. Hollingsworth, at the Aqueduct Bridge, Georgetown, D. C., at 11.30 PM the same day. The Carrington Home Guards was ordered to the Chain Bridge, above Georgetown, D. C., in the evening on 24 May, 1861.

Note: Detachments of the Fairfax Cavalry or Washington Home Guards and the Border Rangers were stationed at the Chain or Falls Bridge, two and a half miles above Georgetown, D. C., in the evening on 23 May, 1861, and withdrew to Alexandria, Virginia, in the morning on 24 May, 1861 (See the Garrison at Alexandria).

Aqueduct Bridge, Georgetown, D. C., Right Column

Aqueduct Bridge, Georgetown, D. C., to Alexandria County, Virginia, 24 May, 1861: The 5th New York State Militia Infantry, the 14th New York State Militia Infantry, Corps Engineers; the 28th New York State Militia Infantry, the 69th New York State Militia Infantry, the 2nd United States Cavalry, Company B; a section of the 3rd United States Artillery, Light Company E, and a detachment of the President's Mounted Guards were ordered across the Potomac River at the Aqueduct Bridge, Georgetown, D. C., under the command of Captain W H Wood, 3rd United States Infantry, Company C, at 2 AM on 24 May, 1861 (See the United States Battalion Infantry).

Ball's Crossroad, Alexandria County, Virginia, President's Mounted Guards, 24 May, 1861: A detachment of the President's Mounted Guards, under the command of Second Lieutenant M S Smith, destroyed several bridges on the Alexandria, Loudoun & Hampshire Railroad above Ball's Crossroad, Alexandria County, Virginia, at 6 AM on 24 May, 1861.

Note: The 5th New York State Militia Infantry and the 28th New York State Militia Infantry were stationed at Camp Union and Camp Crooke, near the Georgetown & Falls Church Road between Arlington Heights and Balls Crossroads, Alexandria County, Virginia, respectively; two companies of the 28th New York State Militia Infantry and the 2nd United States Cavalry, Company B, at the intersection of the Georgetown & Falls Church Road and Alexandria, Loudoun & Hampshire Railroad; the 69th New York State Militia Infantry at Camp Corcoran, near the Georgetown & Falls Church Road, on Arlington Heights, Alexandria County, Virginia, on 24 May, 1861.

General Orders No.1, Paragraph IV, Headquarters, Department of Northeastern Virginia, Alexandria, Virginia, 28 May, 1861: The 5th New York State Militia Infantry, the 28th New York State Militia Infantry, the 69th New York State Militia Infantry, and other troops or detachments in his vicinity were assigned to Colonel D Hunter, 3rd United States Cavalry, by General Orders No.1, Paragraph IV, Headquarters, Department of Northeastern Virginia, Alexandria, Virginia, on 28 May, 1861.

Long Bridge, Washington, D. C., Centre Column

Long Bridge, Washington, D. C., to Alexandria County, Virginia, detachments of the 3rd, 4th, 5th, & 8th District of Columbia Militia Battalion Infantry, 23-24 May, 1861: The National Rifles, the Metroploitan Rifles, the Putnam Rifles, Company A; the Turner Rifles, Company A, and the Union Regiment or Volunteers, Company F, were stationed at and near the Long Bridge, Washington, D. C., and the the Washington Light Battalion Infantry, Company E, and the Constitutional Guards at the Virginia end of the Long Bridge, Washington, D. C., in the evening on 23 May, 1861, and the Constitutional Guards, the National Rifles and the Washington Light Battalion Infantry, Company E, under the command of Colonel & Inspector General C P Stone, District of Columbia Volunteers, were ordered to proceed by the Columbia Turnpike to Columbia Springs, Alexandria County, Virginia, at 1 AM on 24 May, 1861.

Note: The Washington Light Infantry, Company A, was stationed on Maryland Avenue, Washington, D. C., and a company of the 1st Rhode Island Detached Militia Infantry and the 5th Massachusetts Infantry at and near the Long Bridge, Washington, D. C., in the evening on 23 May, 1861.

Long Bridge, Washington, D. C., to Alexandria County, Virginia, 24 May, 1861: The 7th New York State Militia Infantry, the 12th New York State Militia Infantry, the 25th New York State Militia Infantry, the 2nd New Jersey Militia Infantry, the 3rd New Jersey Militia Infantry, the 4th New Jersey Militia Infantry, the 2nd United States Cavalry, Company I, and a section of the 3rd United States Artillery, Light Company E, were ordered across the Potomac River at the Long Bridge, Washington, D. C., under the command of Acting Adjutant General & Major S P Heintzelman, 1st United States Infantry, at 2 AM on 24 May, 1861.

Note: The 7th New York State Militia Infantry, Companies A, B, C, D, E, F, G, H, and I, were stationed at Hunting Park Racecourse, near Columbia Springs, Alexandria County, Virginia; the 2nd New Jersey Militia Infantry at the bridge on the Chesapeake & Ohio Canal, on the Columbia Turnpike, near Columbia Springs, Alexandria County, Virginia; the 3rd New Jersey Militia Infantry near Abingdon House, near Gravelly Point, Alexandria County, Virginia; the 4th New Jersey Militia Infantry at the west side of the Alexandria & Washington Turnpike, two miles from the Long Bridge, Washington, D. C.; the 12th New York State Militia Infantry and the District of Columbia Militia Battalion Infantry at Four Miles Run, near Roach's Mills, Alexandria County, Virginia; and the 25th New York State Militia Infantry at Prospect or Vose's Hill, near the Tollgate on the Columbia Turnpike; and the 2nd United States Cavalry, Company I, on the Columbia Turnpike, near Columbia Springs, Alexandria County, Virginia, on 24 May, 1861.

Washington, D. C., to Columbia Springs, Alexandria County, Virginia, 1st New Jersey Militia Infantry, 26 May, 1861: The 1st New Jersey Militia Infantry was ordered across the Potomac River at the Long Bridge, Washington, D. C., in the evening on 26 May, 1861, and arrived at Camp Van Riper or Princeton, near Columbia Springs, Alexandria County, Virginia, the same day.

Washington, D. C., to Arlington House, on Arlington Heights, Alexandria County, Virginia, 8th New York State Militia Infantry & Varian's Light Artillery, 26 & 27 May, 1861: The 8th New York State Militia Infantry was ordered across the Potomac River by the Long Bridge, Washington, D. C., on 26 May, 1861, and arrived at the rear of Arlington House, on Arlington Heights, Alexandria County, Virginia, the same day. Varian's Light Artillery was ordered across the Potomac River at the Long Bridge, Washington, D. C., in the morning on 27 May, 1861, and arrived at the near of Arlington House, on Arllington Heights, Alexandria County, Virginia, the same day.

General Orders No.1, Paragraph III, Headquarters, Department of Northeastern Virginia, Alexandria, Virginia, 28 May, 1861: The 8th New York State Militia Infantry, the 12th New York State Militia Infantry, the 25th New York State Militia Infantry and other troops or detachments in his vicinity were assigned to Colonel S P Heintzelman, 17th United States Infantry, by General Orders No.1, Paragraph III, Headquarters, Department of Northeastern Virginia, Alexandria, Virginia, on 28 May, 1861.

Special Orders No.3, Paragraph I, Headquarters, Department of Northeastern Virginia, Arlington, Alexandria County, Virginia, 31 May, 1861: Colonel C P Stone, 14th United States Infantry, was relieved from duty with the Department of Northeastern Virginia, and Colonel S P Heintzelman, 17th United States Infantry, was assigned to command the brigade, troops, and detachments at and near Alexandria, Virginia, by Special Orders No.3, Paragraph I, Headquarters, Department of Northeastern Virginia, Arlington, Alexandria County, Virginia, on 31 May, 1861.

Long Bridge, Washington, D. C., Left Column

Long Bridge, Washington, D. C., to Alexandria, Virginia, 24 May, 1861: A squad of the President's Mounted Guard and guides, the 1st Michigan Infantry, the 2nd United States Cavalry, Company E; and a section of the 3rd United States Artillery, Light Company E, were ordered across the Potomac River at the Long Bridge, Washington, D. C., under the command of Colonel O B Willcox, 1st Michigan Infantry, at 2 AM on 24 May, 1861, and arrived by the Alexandria & Washington Turnpike at Alexandria, Virginia, at 5 AM the same day.

Note: Major G Stoneman, 1st United States Cavalry, was assigned to command the 2nd United States Cavalry, Companies B, E, and I, during the occupation of Arlington Heights, Alexandria County, and Alexandria, Virginia, on 24 May, 1861.

Giesboro Point, D. C., to Alexandria, Virginia, 11th New York Infantry, 24 May, 1861: The 11th New York Infantry was ordered across the Potomac River by the steamers Baltimore and Mount Vernon at Giesboro Point, D. C., under the command of Colonel E E Ellsworth, at 1 AM on 24 May, 1861, and was accompanied by the steamer James Guy. The regiment arrived at King's Street Wharf, Alexandria, Virginia, at 4 AM the same day and disembarked at 5 AM on 24 May, 1861. The 11th New York Infantry, Company A, was ordered to the Telegraph Office, on Cameron Street, near King Street, Alexandria, Virginia, under the command of Colonel E E Ellsworth, in the morning the same day and Colonel E E Ellsworth was killed by Mr J W Jackson at the Marshall House Hotel, on the corner of King and Pitt Streets, Alexandria, Virginia, at 5.18 AM on 24 May, 1861.

Capture of Border Guards or Fairfax Cavalry, 24 May, 1861: The 1st Michigan Infantry accompanied by Captain S W Owen, and a section of the 3rd United States Artillery, Light Company E, arrived at Duke Street, Alexandria, Virginia, under the command of Colonel O B Willcox, at 5 AM on 24 May, 1861, and captured thirty-six men of the Border Guards or Fairfax Cavalry, under the command of Captain M D Ball, at Price, Birch & Co Slave Pen, on Duke Street, Alexandria, Virginia, the same day.

Washington, D. C., to Washington & Alexandria Turnpike, between Four Miles Run & Alexandria, Virginia, 5th Massachusetts Infantry, 25-26 May, 1861: The 5th Massachusetts Infantry was ordered across the Potomac River at the Long Bridge, Washington, D. C., at 10 PM on 25 May, 1861, and arrived at Camp Andrew, near the Alexandria & Washington Turnpike, between Four Miles Run and Alexandria, Virginia, at 12 AM on 26 May, 1861.

General Orders No.1, Paragraph I, Headquarters, Department of Northeastern Virginia, Alexandria, Virginia, 28 May, 1861: The 1st Michigan Infantry, the 5th Massachusetts Infantry, and the 11th New York Infantry were assigned to Colonel C P Stone, 14th United States Infantry, by General Orders No.1, Headquarters, Department of Northeastern Virginia, Alexandria, Virginia, on 28 May, 1861.

United States Corps Engineers:Captains D P Woodbury and C E Blunt, First Lieutenant D C Houston, and Second Lieutenants C E Cross, United States Corps Engineers, were assigned to the right column, under the command of Captain W H Wood, 3rd United States Infantry, Company C; Captain B S Alexander, First Lieutenant F E Prime, and Second Lieutenant H M Robert to the centre column, under the command of Acting Inspector General & Major S P Heintzelman, 1st United States Infantry, and Captain H G Wright as a volunteer aide to Major S P Heintzelman, 1st United States Infantry, during the occupation of Alexandria and Arlington Heights, Alexandria County, Virginia, on 23 and 24 May, 1861.

Major General C W Sandford, New York Volunteers: Major General C W Sandford, New York Volunteers, was ordered to assume immediate command of all the regiments of his State within the District of Columbia, and to report directly to general headquarters by Special Orders No.89 1/2, Headquarters of the Army, Washington, D. C., on 22 May, 1861, and was ordered across Potomac River at the Long Bridge, Washington, D. C., at 3 AM on 24 May, 1861. He was stationed at Willard's Hotel, on Pennsylvania Avenue, in the evening the same day and Brigadier General I McDowell, United States Army, was assumed command of the Department of Norteastern Virginia in the afternoon on 27 May, 1861. Major General C W Sandford was ordered to proceed by the Washington Branch, Baltimore & Ohio Railroad, to Martinsburg, Berkeley County, Virginia, at 3 PM on 7 July, 1861, and was accompanied by the 5th New York State Militia Infantry and the 12th New York State Militia Infantry. He was assigned to the command the Third Division, Army of Pennsylvania, by Special Orders No.96, Paragraph I, Headquarters, Department of Pennsylvania, Martinsburg, Berkeley County, Virginia, on 10 July, 1861, and was discharged by General Orders No.46, Paragraph III, War Department, Adjutant General's Office, Washington, D. C., on 19 July, 1861, dated 15 August, 1861 (See the Army of Pennsylvania).

Reports

OFFICIAL REPORT NO.1: Series I, Volume 2 (Serial No.2), Chapter IX, pp35-39
Major General C W Sandford, New York Volunteers, Headquarters, First Division, New York State Militia, dated Washington, D. C., 28 May, 1861

OFFICIAL REPORT NO.2: Series I, Volume 2 (Serial No.2), Chapter IX, pp40-41
Major Gneral S P Heintzelman, United States Army, Headquarters, Department of Washington, dated Washington, D. C., 20 July, 1863

OFFICIAL REPORT NO.3: Series I, Volume 2 (Serial No.2), Chapter IX, pp41
Colonel O B Willcox, First Michigan Infantry, dated Alexandria, Virginia, 5.30 AM 24 May, 1861

OFFICIAL REPORT NO.4: Series I, Volume 2 (Serial No.2), Chapter IX, pp41-42
Lieutenant Colonel N BL Farnham, First Zouaves, New York Militia, dated Alexandria, Virginia, 5.18 PM 24 May, 1861

Orders of Battle

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