Here's a little more for you in the meanwhile:

Eight companies of exempts and junior reserves formed this command at Pollard, Alabama, August 16, 1864. At least five companies had belonged to Echols’s Reserve Battalion, which had been doing provost duty at Montgomery, Alabama, since its organization on March 23, 1864. Also known as the 2nd Alabama Junior Reserve Battalion, this unit was called Rice’s Regiment or the 2nd Alabama Junior Reserves after August 16, 1864. Officers and men enlisted for three years or the war.

Company “A” of Tallapoosa, Chambers and Macon Counties, also called the “Calhoun Greys”

Capt. John H. Echols. Formerly Provost Marshal of Montgomery, Alabama. Appointed Major to rank from August 16, 1864.
Capt. James Armstrong. Promoted Captain to rank from August 16, 1864. Captured at Blakely, Alabama, April 9, 1865; exchanged at Vicksburg, Mississippi, May 6, 1865. Surrendered May 11, 1865, at Meridian, Mississippi.

This company organized at Montgomery, Alabama, January 1, 1864, officers and men being exempts serving on provost guard duty there. It became Company “A” of the 2nd Reserve Battalion on March 23, 1864.

On April 9, 1865, most of the regiment was captured at Blakely, Alabama. Prisoners of war were transferred from Ship Island, Mississippi, to New Orleans, Louisiana, April 28, 1865, and forwarded to Vicksburg, Mississippi, three days later. Officers and men were paroled at that point on May 6, 1865. They surrendered along with other survivors of the command at Meridian, Mississippi, May 11, 1865. Known as the 2nd Alabama Reserves through most of its brief career, officers and men surrendered as the 63rd Alabama Infantry Regiment.