20th (Russell's) Cavalry Regiment [also called 15th Regiment] was organized in February, 1864. Its members were recruited in the counties of Henry, Gibson, Carroll, Madison, Dyer, Humphreys, and Weakley. The unit was placed in T.H. Bell's Brigade, Department of Alabama, Mississippi, and East Louisiana, and fought at Okolona, Brice's Cross Roads, and Harrisburg. Later it skirmished in Tennessee, was part of Hood's operations, then moved to Mississippi. The regiment ended the war in Alabama and on May 3, 1865, contained 29 officers and 217 men. The field officers were Colonel Robert M. Russell, Lieutenant Colonel Henry C. Greer, and Major H.F. Bowman.