Troop E, 153rd Cavalry was first organized 1 March 1964 as the mounted reconnaissance element of the 53rd Armored Brigade under command of Captain Harry J. Raymond. The troop had tanks and armored personnel carriers (APCs). Troops served on state active duty on March 27, 1964 for Operation Good Friday. Troop conducted its first Annual Training from August 9 to 23, 1964 at Fort Stewart under command of Captain William B. Nunn. Unit aided in search for a missing man in the Attapulgus Creek Swamp from August 24 to 25, 1964. Conducted Annual Training June 27 to July 11, 1965, and June 5 to 19, 1966 at Fort Stewart.