Here is the record of one with the same name.

James M. Barker

Residence was not listed;
Enlisted on 4/6/1864 at Henry County, VA as a Private.
On 4/6/1864 he mustered into "E" Co. VA 38th Infantry
He was Absent on 2/25/1865
He was listed as:
* Absent 12/31/1864 Salisbury, NC
* Court martialed 12/31/1864 (place not stated) (For desertion)

Sources used by Historical Data Systems, Inc.:
- The Virginia Regimental Histories Series

.....

James M. Barker, Private, Company E, 38th Virginia Infantry (Pittsylvania Regiment), Conscript at Camp Lee, Va., enrolled April 6, 1864, assigned to 38th Virginia Regiment April 12, recorded on January 25, 1865 as absent, at Salisbury, N. C. undergoing sentence of General Court Martin on desertion, no further records

M324: Compiled Service Records of Confederate Soldiers Who Served in Organizations from the State of Virginia