See also: https://museum.dmna.ny.gov/unit-history/cavalry/1st-mounted-rifles-regiment

NEW YORK FIRST MOUNTED RIFLES (Three Years)

First Mounted Rifles.-Cols., Charles C. Dodge, Benjamin F. Onderdonk, Edwin V. Sumner; Lieut.-Cols., Benjamin F. Onderdonk, Alexander G. Patton, James N. Wheelan; Majs., William H. Schieffelon, Henry Terwilliger, James N. Wheelan, Minott A. Pruyn, Charles C. Dodge, Alexander G. Patton, Edgar A. Hamilton. This regiment from the state at large was organized at New York city. The companies were mustered into the U. S. service for three years as follows: A and B at Fort Monroe, Va., July 30, 1861; C and D at Newburg, Sept. 18 and Oct. 16, 1861; E, F, G and H at New York city, in June, July and Aug., 1862; and I, K, L and M in Aug. and Sept., 1862. On July 17, 1864, it received by transfer 270 men of the 16th N. Y. artillery. The original members, except veterans, were mustered out at the expiration of their term of service and in. July, 1865, the regiment was consolidated into a battalion of seven companies, commanded by Col. Sumner; to complete the reorganization of the regiment, it was consolidated with the 3d N. Y. cavalry, which constituted companies B, F, H, I and L of the new organization. The first two companies left the state in July, 1861; C and D in Dec., 1861; E, F, G and H in Aug. 1862; and I, K, L and M in Sept., 1862. It served until 1864 with the 7th and 4th corps, principally at Fortress Monroe, Norfolk, Suffolk, Portsmouth, Williamsburg and Yorktown, Va., taking part in over 50 battles and skirmishes, but sustaining no severe losses, its heaviest casualties being at Scott's mills, Va., in May, 1863, when 28 were killed, wounded and missing. The regiment was ordered to join Wistar's division, 18th corps in Jan., 1864, with which it was engaged at New Kent Court House and Bottom's bridge. During the rest of its active service it was principally with the cavalry division of the Army of the James, one detachment acting as escort at headquarters, and Cos. H and D with the 10th corps from June to Aug. 1864. In the operations against Petersburg and Richmond in May, 1864, it sustained a loss of 13, and during the siege was often in action, but met with no large losses, its total casualties amounting to, 43 killed, wounded and missing. It was active at the final assault on Petersburg, April 2, and saw its last fighting at Murfree's depot, Somerton and Jackson, N. C. The final record of the regiment will be found under the head of the 4th provisional cavalry. The losses of the regiment during service were 2 officers and 30 men killed and mortally wounded; 3 officers and 125 men died of disease and other causes, a total of 165. (See 7th Cavalry.) Source: The Union Army, Vol. 2 p. 200 New York FIRST REGIMENT OF MOUNTED RIFLES. (Three Years) After the action at Big Bethel, Va., June 10, 1861, MajorGeneral Butler authorized Capt. Judson Kilpatrick, 5th N. Y. Volunteer Infantry, to organize a squadron of cavalry for duty in General Butler's Department. This authority was approved by the Secretary of War and Companies A and B were accordingly organized at New York city. Later in 1861 Capt. C. C. Dodge received permission from the War Department to raise two more companies to form a battalion, and Companies C and D were accordingly organized at Newburgh with the consent of the State authorities, and Captain Dodge was appointed Major. In the summer of 1862 the Governor of the State authorized Major Dodge to organize sufficient companies to raise the battalion to a regiment and appointed him Colonel of the same, and Companies E, F, G, H, I, K, L and M were accordingly organized at New York city. The companies were mustered in the service of the United States for three years: at Fort Monroe, Va., A and B, July 30, 1861; at Newburgh C and D September 18 and October 16, 1861, respectively; at New York city E, F, G and H in June, July and August, 1862; and I, K, L and M in August and September, 1862. July 17, 1864, 270 men of the 16th N. Y. Volunteer Artillery, who had volunteered to serve with the regiment, were transferred to it. At the expiration of their term of service the men of Companies A, B, C and D, entitled thereto, were discharged and the companies continued in the service. July 21, 1865, the regiment, commanded by Col. Edwin V. Sumner, was consolidated at Fredericksburg, Va., into a battalion of seven companies, the men of Company B being transferred to Companies E and G; those of F to A; of H to K; of I to M, and of L to D; leaving in existence Companies A, C, D, E, G, K and M, and the reorganization of the regiment was completed by the transfer of the 3d N. Y. Volunteer Cavalry, consolidated into five companies, as Companies B, F, H, I and L to the same. The companies were recruited principally: A and B at New York city; C and D--First and Second Cavalry Companies, Tenth Legion--at Monticello, Grahamville, Fallsburgh, Clayville, Middletown, Ellenville and Newburgh; E at Troy, Albany, Fort Edward, Salem, Schenectady and New York city; F at Troy, Buffalo and New York city; G at Troy, Chatham and New York city; H at Troy, Buffalo, Mt. Pleasant, Syracuse, Tarrytown and New York city; I at Canaan, Carmel, Chatham, North Castleton and New York city; K at Buffalo, Charlton, Livonia, Richmond, Springwater, Victor and New York city; L at Lenox, Oneida, Rome, Syracuse and Verona; and M at Chatham, North Castle and New York city. The companies left the State, A and B in July, 1861; C and D December 6, 1861; E, F, G and H in August, 1862; I, K, L and M September 19, 1862, and served in the Department of Virginia (7th and 4th Corps) and Department of Virginia and North Carolina, principally at Fort Monroe, Norfolk and Suffolk, Portsmouth, Williamsburg and Yorktown, Va.; in Wistar's Division, 18th Corps, from January, 1864; in the Cavalry, Army of the James, with the 3d Brigade, 1st Division, 10th Corps, from March, 1864; a detachment as escort, headquarters Army of the James, from July, 1864; unattached from August, 1864; in the 3d Brigade of the Cavalry Division, Army of the James, until March, 1865; again unattached to the close of the war; and at Fredericksburg, Va., from April, 1865. Companies H and D served with the 10th Corps from June, 1864; with the 18th Corps from August, 1864. September 6, 1865, the regiment received the designation, 4th Provisional Regiment, N. Y. Volunteer Cavalry, and its final record will be found under that head.

Source: Phisterer, p. 1,110

New York 1st Mounted Rifles Cavalry (Union)

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