Lieutenant Colonel Henry A. Edmundson.
Colonel Warren M. Hopkins 1864 – 1865
The unit started out as Trigg´s Virginia Partisan Ranger and re-designated the 27th Cavalry Battalion in September 1862 with seven companies, later increased to nine. It was in July 1864 used as nucleus for the 25th Cavalry Regiment containing 240 soldiers.
Served in General Hodge´s and W.E. Jones´ Brigade and participated in engagements in East Tennessee and western Virginia.