19th (Biffle's) Cavalry Regiment, usually known as Biffle's 9th Cavalry, was organized in October, 1862. The men were from the counties of Wayne, Lawrence, Maury, Perry, Lewis, and Madison. It served in J.B. Biffle's and Dibrell's Brigade, and fought at Parker's Cross Roads, Thompson's Station, Brentwood, and Chickamauga. Later it skirmished in Tennessee, then was active in the Atlanta Campaign and Forrest's operations during Hood's Campaign. It moved to Mississippi and ended the war in Alabama. During December, 1862, this regiment contained about 400 effectives and on May 3, 1865, there were 22 officers and 281 men present. It was included in the surrender of the Department of Alabama, Mississippi, and East Louisiana as part of T.H. Bell's command. The field officers were Colonel Jacob B. Biffle, Lieutenant Colonel Albert G. Cooper, and Major Barclay Martin.

A more comprehensive history can be found here.