This roster includes the known officers and enlisted men of the 1st Ohio Infantry (Three Months’ 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 1st Ohio Infantry (Three Months’ Service), these resources may provide additional historical detail, including regimental histories and Civil War reference works.
Field & Staff
Some details are incomplete in surviving primary sources.
- Colonel – service notes.
- Lieutenant Colonel – service notes.
- Major – service notes.
- Adjutant – service notes.
- Quartermaster – service notes.
- Surgeon – service notes.
- Assistant Surgeon – service notes.
- Chaplain – service notes.
Company A (Lancaster Guards)
Some details are incomplete in surviving primary sources.
- Captain – service notes.
- First Lieutenant – service notes.
- Second Lieutenant – service notes.
- Enlisted men – service notes.
Company B (Lafayette Guards)
Some details are incomplete in surviving primary sources.
- Captain – service notes.
- First Lieutenant – service notes.
- Second Lieutenant – service notes.
- Enlisted men – service notes.
Company C (Dayton Light Guards)
Some details are incomplete in surviving primary sources.
- Captain – service notes.
- First Lieutenant – service notes.
- Second Lieutenant – service notes.
- Enlisted men – service notes.
Company D (Montgomery Guards of Dayton)
Some details are incomplete in surviving primary sources.
- Captain – service notes.
- First Lieutenant – service notes.
- Second Lieutenant – service notes.
- Enlisted men – service notes.
Company E (Cleveland Grays)
Some details are incomplete in surviving primary sources.
- Captain – service notes.
- First Lieutenant – service notes.
- Second Lieutenant – service notes.
- Enlisted men – service notes.
Company F (Hibernian Guards of Cleveland)
Some details are incomplete in surviving primary sources.
- Captain – service notes.
- First Lieutenant – service notes.
- Second Lieutenant – service notes.
- Enlisted men – service notes.
Company G (Portsmouth Guards)
Some details are incomplete in surviving primary sources.
- Captain – service notes.
- First Lieutenant – service notes.
- Second Lieutenant – service notes.
- Enlisted men – service notes.
Company H (Zanesville Guards)
Some details are incomplete in surviving primary sources.
- Captain – service notes.
- First Lieutenant – service notes.
- Second Lieutenant – service notes.
- Enlisted men – service notes.
Company I (Mansfield Guards)
Some details are incomplete in surviving primary sources.
- Captain – service notes.
- First Lieutenant – service notes.
- Second Lieutenant – service notes.
- Enlisted men – service notes.
Company K (Jackson Guards of Hamilton)
Some details are incomplete in surviving primary sources.
- Captain – service notes.
- First Lieutenant – service notes.
- Second Lieutenant – service notes.
- Enlisted men – service notes.
Sources & Notes
- Official Records of the War of the Rebellion, Series I, relevant volumes and pages.
- State Adjutant General Report for Ohio (year and volume as available).
- Dyer’s Compendium.
- Fox, “Regimental Losses in the American Civil War.”
- The Union Army, Federal Publishing Company, 1908, Volume 2.