Book excerpt: The Tennessee 12th Cavalry Regiment [also called 1st Partisan Rangers] was organized behind Federal lines in February, 1863. The men were from the counties of Fayette, Tipton, Shelby, Haywood, and Gibson. It served R.V. Richardson's and Rucker's Brigade, confronted the Federals in Tennessee and Mississippi, and in October totaled about 300 effectives. Later it was active in Georgia, fought at Memphis, then was part of Hood's operations in Tennessee. During February, 1865, the regiment was broken up. Some of its members became part of the 3rd (Forrest's Old) Tennessee Cavalry. Companies Of The Tennessee 12th Cavalry Regiment Co. ""A"". Fayette County. Co. ""B"". Fayette County. Co. ""C"". Tipton County. Co. ""D"". Shelby County. Co. ""E"". Shelby County. Co. ""F"". Fayette County. Co. ""G"". Tipton County. Co. ""H"". Fayette County. Co. ""I"". Haywood County. Co. ""K"". Fayette County.