This roster includes the known officers and enlisted men of the 12th Ohio Infantry (Three Years’ Service), organized by Field & Staff and Companies A through K. Information is drawn from 19th-century state adjutant general reports, the Official Records, and verified regimental histories.
Tip: To search for a soldier’s name on this page, use Ctrl + F (Windows) or Command + F (Mac).
For an overview of this regiment’s organization, service, engagements, and casualties, see the regiment summary page.
Research This Regiment
If you’re researching ancestors in the 12th Ohio Infantry (Three Years’ Service), these resources may provide additional historical detail, including regimental histories and Civil War reference works.
Field & Staff
- Colonel –
- Lieutenant Colonel –
- Major –
- Adjutant –
- Quartermaster –
- Surgeon –
- Assistant Surgeon –
- Chaplain –
Company A
- Captain –
- First Lieutenant –
- Second Lieutenant –
- First Sergeant –
- Sergeants –
- Corporals –
- Musicians –
- Wagoner –
- Privates –
Company B
- Captain –
- First Lieutenant –
- Second Lieutenant –
- First Sergeant –
- Sergeants –
- Corporals –
- Musicians –
- Wagoner –
- Privates –
Company C
- Captain –
- First Lieutenant –
- Second Lieutenant –
- First Sergeant –
- Sergeants –
- Corporals –
- Musicians –
- Wagoner –
- Privates –
Company D
- Captain –
- First Lieutenant –
- Second Lieutenant –
- First Sergeant –
- Sergeants –
- Corporals –
- Musicians –
- Wagoner –
- Privates –
Company E
- Captain –
- First Lieutenant –
- Second Lieutenant –
- First Sergeant –
- Sergeants –
- Corporals –
- Musicians –
- Wagoner –
- Privates –
Company F
- Captain –
- First Lieutenant –
- Second Lieutenant –
- First Sergeant –
- Sergeants –
- Corporals –
- Musicians –
- Wagoner –
- Privates –
Company G
- Captain –
- First Lieutenant –
- Second Lieutenant –
- First Sergeant –
- Sergeants –
- Corporals –
- Musicians –
- Wagoner –
- Privates –
Company H
- Captain –
- First Lieutenant –
- Second Lieutenant –
- First Sergeant –
- Sergeants –
- Corporals –
- Musicians –
- Wagoner –
- Privates –
Company I
- Captain –
- First Lieutenant –
- Second Lieutenant –
- First Sergeant –
- Sergeants –
- Corporals –
- Musicians –
- Wagoner –
- Privates –
Company K
- Captain –
- First Lieutenant –
- Second Lieutenant –
- First Sergeant –
- Sergeants –
- Corporals –
- Musicians –
- Wagoner –
- Privates –
Sources & Notes
- Official Records of the War of the Rebellion (Series I, relevant volumes and parts covering the 12th Ohio Infantry).
- State Adjutant General Report for Ohio (years and volumes covering the 12th Infantry, Three Years’ Service).
- Dyer’s Compendium.
- Fox, “Regimental Losses in the American Civil War.”
- Regimental history: “The Union Army” by Federal Publishing Company, 1908, Volume 2.