15th Cavalry Regiment, New York, American Civil War (Union): New York State Military Museum and Veterans Research Center 15th Cavalry Regiment Left the State in detachments: September 1863 to January 1864 Consolidated with 6th regiment of cavalry and designated 2nd provisional regiment of cavalry, June 17, 1865 THE FOLLOWING IS TAKEN FROM NEW YORK IN THE WAR OF THE REBELLION, 3RD ED. FREDE...