J. W. Casson
Regiment Name 16th Virginia Infantry
Side Confederate
Company G
Soldier's Rank_In Private
Soldier's Rank_Out Private
Alternate Name John W./Cason
Film Number M382 roll 10

William A. Casson
Regiment Name 17th Virginia Cavalry.
Side Confederate
Company B
Soldier's Rank_In Private
Soldier's Rank_Out Private
Alternate Name William H./Carson
Film Number M382 roll 10

The only James C. Carson I can find is:

James C. Carson
Regiment Name Vinson's Company, Scouts, Louisiana
Side Confederate
Company
Soldier's Rank_In Private
Soldier's Rank_Out Private
Film Number M378 roll 5

U.S. Civil War Soldiers, 1861-1865
Name: James C. Carson
Side: Confederate
Regiment State/Origin: Louisiana
Regiment Name: Vinson's Company, Scouts, Louisiana
Regiment Name Expanded: Vinson's Company, Louisiana Scouts
Rank In: Private
Rank In Expanded: Private
Rank Out: Private
Rank Out Expanded: Private
Film Number: M378 roll 5

Carson, James C.,Pvt. Vinson's Co. Scouts La. Paroled at Franklin, La., June 10th, 1865. Res. Franklin, La.

JR