Could this be your man? He must have been captured at the Battle of Nashville, TN Dec 15-16, 1864. I've included a short history of the 36th Georgia Infantry for reference.
Thomas B. Akins
Residence DeKalb County GA;
Enlisted on 4/10/1862 as a Private.
On 4/10/1862 he mustered into "F" Co. GA 36th Infantry
(date and method of discharge not given)
He was listed as:
* POW 12/16/1864 Nashville, TN
* Oath of Allegiance 6/12/1865 Camp Chase, OH
* Released 6/12/1865 Camp Chase, OH
Sources used by Historical Data Systems, Inc.:
- Roster of Confederate Soldiers of Georgia 1861-1865
(c) Historical Data Systems, Inc. @ www.civilwardata.com
36th Regiment, Georgia Infantry (Broyles')
6th (Glenn's) Infantry Regiment was organized at Dalton, Georgia , during the winter of 1861-1862 with many officers and men from the Dalton area. It was sent to Tennessee, then moved to Mississippi where it served in T.H. Taylor's Brigade, Department of Mississippi and East Louisiana. The regiment fought at Champion's Hill and was captured at Vicksburg on July 4, 1863. After being exchanged and brigaded under General Cummings, it fought with the Army of Tennessee from Chattanooga to Nashville, and ended the war in North Carolina. The unit was organized with 930 men, reported 43 casualties at Chattanooga, and totalled 267 men and 213 arms in December, 1863. In January, 1865, when it was consolidated with the 56th Georgia Regiment, 232 were present for duty. Few surrendered on April 26. The unit was commanded by Colonels C.E. Broyles and Jesse A. Glenn, Lieutenant Colonel Alexander M. Wallace, and Major John Loudermilk.