|Unit History Project|
3rd Cavalry Regiment
Mustered in: July 17 to August 21, 1861.
July 26, 1861, Col. James H. Van Alen received authority from the War Department to recruit this regiment. As soon as companies were organized they were forwarded to Meridian Hill, near Washington, D. C., where the regiment was organized, and where September 9, 1861, Colonel Van Alen took command. The Onondaga Cavalry was merged into the regiment; the 6th Independent Company, Ohio Cavalry, and Unattached Company A, New Jersey Cavalry, were assigned to the regiment as Companies L and M, respectively; the latter was, however, April 8, 1862, transferred to the 1st N. J. Cavalry as Company L, and a new Company M organized for the regiment in September, 1862. The companies were mustered in the service of the United States for three years; A, C, F and H at Rochester, July 17, August 4, 20, and 27, 1861, respectively; B and I at Syracuse, July 30 and August 27, 1861, respectively; D at Albany, August 12, 1861; E and K at Elmira, August 22 and May 14, 1861, respectively; G at Boonville, August 21, 1861; L at Cincinnati, Ohio, September 13, 1861; and M (2d organization) at Albany, September 10, 1862. Company K was originally Company G of the 13th N. Y. Volunteer Infantry (two years' regiment) and was ordered transferred to the 3d Cavalry August 23, 1861. At the expiration of its term of service, those entitled thereto were discharged, and the regiment, composed of veterans and recruits, continued in the service.
The companies were recruited principally: A, C and H at Rochester; B at Syracuse; D at Schoharie, Schenevus, Schaghticoke, Albany, Cobleskill, Gallupsville and Unadilla; E at Delhi, Deposit, Elmira, Margaretville, Middletown and Walton; F at Medina, New-stead and Newfane; G at Utica, Leyden, Boonville, Lowville and Watson; I at Syracuse and North Hamburgh; K at Elmira, Brockport and Rochester; L at Cincinnati and Xenia, Ohio, and M (2d organization) at Rochester and Brockport.
The regiment served: Four companies in Banks', and six in Stone's Division, Army of the Potomac, from October, 1861; at Washington, D. C., from March, 1862; in North Carolina, Department North Carolina, and 18th Corps, from April, 1862; in 1st Brigade, Kautz's Division, Cavalry, Army of the James, from April, 1864; at and about Norfolk, Va., December 4, 1864; at Portsmouth, Va., from January, 1865; at Suffolk, Va., from March, 1865; and at Norfolk, Va., from June, 1865.
July 4, 1865, the enlisted men of Company G were transferred to Company A, those of H to Companies A, B, F and L; those of K to B; of M to L; and some of the men Company F to E; reducing the regiment to eight companies, A, B, C, D, E, F, I and L; July 12, 1865, Company D was transferred to Company L; E to F; and I to C; July 21, 1865, the remaining five companies, A, B, C, F and L, commanded by Col. Geo. W. Lewis were consolidated at Norfolk, Va., with the 1st Regiment Mounted Rifles, N. Y. Volunteers, forming Companies F, B, I, H and L, respectively, of a new organization, designated September 6, 1865, the 4th Provisional Regiment, N. Y. Volunteer Cavalry.
During its service the regiment lost by death, killed in action, 3 officers, 29 enlisted died of wounds received in action, 19 enlisted men; died of disease and other 2 officers, 154 enlisted men; total, 5 officers and 202 enlisted men; aggregate, 207; 38 enlisted men died in the hands of the enemy.
Battles and Casualties Table from Phisterer
Bruce, James. Duty, ours—Consequences, God's. A sermon in memory of Lieutenant Herman E. Smith, Co. F, Third N.Y. cavalry, preached at Margaretville, N.Y., November 20, 1864, by James Bruce. Delhi: Sturtevant & Mclntosh, printers, 1865.
Glesnear, Philip. Letter, 29 May 1865.
Leyden, Maurice. Letter, 27 May 1864.
Roe, Edward Payson. Taken alive and other stories, with an autobiography, by Edward P. Roe. New York: Dodd, Mead & co.  .
Sprole, William Thomas. The costly sacrifice, a memorial discourse occasioned by the death of Col. Charles Townsend, of the Army of the Potomac, by Rev. W. T. Sprole, delivered in the First Presbyterian church, Newburgh, N.Y., June 18, 1865. Printed for private distribution. 1866.
Stahler, Enoch. Enoch Stahler, miller and soldier, First Lieutenant Third New York cavalry. Washington, D. C., c1909.
Tucker, James Marion. "Kautz raiding around Petersburg," by Lieutenant James Marion Tucker. MOLLUS-Minn v 124-35. 94
Wall, Edward. "The first assault on Petersburg." Proceedings of the New Jersey historical society ns III (1918) 193-204.
Wall, Edward. "Raids in Southeastern Virginia fifty years ago." Proceedings of the New Jersey historical society ns III (1918) 65-82, 147-61.
New York State Division of Military and Naval Affairs: Military