Sifakis, Compendium of the Confederate Armies - SC & GA, page 78

8th SC Inf Bn, Reserves - organized in 1864 - took part in the Carolina Campaign - surrendered by Gen Johston at Durham Station, NC 4/26/1865

Roster of Confederate Soldiers, 1861-1865, shows:

Cone, A.M. SC 8th Bn.Res. Fishburne's Co.
Cone, W.F. SC 8th Bn.Res. Fishburne's Co.

As for George Cone, I show two from SC:

Cone, George SC Cav. Martin's Regt. Heywood's Co.
Cone, George P. SC 1st (Hagood's) Inf. 1st Co.H, 2nd Co.C