George Johnson is one man who served in two different regiments. His pension index card states he served in both regiments.

He served in Company G, 8th Ind. Infantry Regiment when that regiment entered service for three months in 1861.

Apparently his three months of service did not exempt him from the draft. He was drafted in 1864 and assigned to Company E, 38th Ind. Infantry Regiment.

Shelby County was either is place of resident in 1864 or at least the county to which is enlistment was credited.

I ASSUME he went by rail to Washington, D. C. and then Sherman's army including the 38th Ind. Infantry reached and captured Savannah, Ga. he probably traveled by boat to join his regiment.

I did not find a history of the 8th Ind. Infantry.
I just finished a book called ""The Class of 1846" by John Waugh (1994 published) which has a chapter on the 1861 West Virginia campaign but without mentioning the 8th Indiana by name.

I did find on 38th Ind. Infantry.

38th Indiana, "A Hoosier Regiment in Dixie: A History of the Thirty-Eighth Indiana Volunteer Infantry Regiment," by Arville L. Funk. Published in 1978, by the Adams Publishing, Chicago, Ill.

I assume you could get either/both books from local library as they are fairly new.