The 15th New York Cavalry Regiment lost 2 officers and 35 enlisted men killed or mortally wounded and 5 officers and 126 enlisted men to disease during the Civil War.

Organized at Syracuse, N.Y.,
August 8 Companies A, B & C mustered in
August 26 Companies D, F & G mustered in
August 15 Company E mustered in
September 5 Company H mustered in
September Companies A to G left State for Washington, D.C. and Attached to 22nd Army Corps, Dept. of Washington, D.C. Duty at Camp Stoneman, Defenses of Washington.
October 15 Company K mustered in
October Companies H and K left State for Washington, D.C.
November 30 Company I mustered in and left State for Washington, D.C.
January 20 Company L mustered in
January 22 Action at Hillsboro, Va.
January 24 Company M mustered in
January Companies L & M left State for Washington, D.C.; Attached to Cavalry Brigade, 1st Division, Army of West Virginia
January 27-February 7 Operations in Hampshire and Hardy Counties, West Virginia
February 20 Upperville
February 29-
March 5
Expedition to Petersburg and destruction of Salt Works near Franklin, West Va.
April 30-May 16 Sigel’s Expedition from Martinsburg to New Market. Attached to 2nd Brigade, 1st Cavalry Division, Army of West Virginia
May 12 Moorefield
May 13 Luray Gap, Mt. Jackson, and near New Market
May 14-15 New Market
May 22 Front Royal
May 25 Newtown
May 26-July 1 Hunter’s Raid to Lynchburg, Va.
May 27 Woodstock
May 29-30 Newtown
June 4 Mt. Jackson
June 5 Piedmont
June 6 Occupation of Staunton
June 10 Waynesboro
June 11 Lexington
June 16 New London
June 17 Diamond Hills
June 17-18 Lynchburg
June 19-20 Liberty
June 21 Catawba Mountains and Salem
June 28 Newtown
July 2 Bunker Hill and Bolivar Heights
July 3 Leetown and Martinsburg
July 15-16 Near Hillsboro
July 17-18 Snicker’s Ferry
July 19 Ashby’s Gap and Berry’s Ford
July 23 Near Kernstown
July 24 Kernstown, Winchester
July 25 Bunker Hill and Martinsburg
August 11 Strasburg
August 21-22 Near Charlestown
August 24 Ordered to Cumberland, Md. and duty at Remount Camp
October Attached to 2nd Brigade, 3rd Division, Cavalry Corps, Army of the Shenandoah, and Army of the Potomac
November 1 Green Springs Run (Detachment)
December 19-21 Expedition to Lacy Springs
December 21 Lacy Springs
December 31 Near Harrisonburg
February 27-
March 25
Sheridan’s Raid from Winchester
March 2 Waynesboro and Occupation of Staunton
March 3 Charlottesville
March 15 Ashland
March 28-April 9 Appomattox Campaign
March 30-31 Dinwiddie Court House
April 1 Five Forks
April 2 Fall of Petersburg
April 3 Namozine Church
April 4 Jettersville
April 6 Sailor’s Creek
April 8 Appomattox Station
April 9 Appomattox Court House. Surrender of Lee and his army.
April 23-29 Expedition to Danville
May March to Washington, D.C.
May 23 Grand Review
June 17 Consolidated with 6th New York Cavalry to form 2nd Regiment Provisional Cavalry.
August 9 Mustered out at Louisville, Ky.