Following from the Civil War Soldiers and Sailors System database:

George Carson, Private, Company C - 42nd U.S. Colored Infantry Regiment. Organized at Chattanooga and Nashville, Tennessee.

Hiram Carson, Private, Company K, 123rd U.S. Colored Infantry Regiment. Organized at Louisville, Kentucky.

Go to:

http://www.bjmjr.com/military/index.htm

for information on how to obtain service and pension records. It is recommended that you obtain and review the service records before ordering the pension records.