1st Regiment, Ohio Infantry (3 months, 1861)

United States     U.S. Military      Ohio      Ohio Military      Ohio in the Civil War      Ohio Civil War Union Units 1st through 8th      1st Regiment, Ohio Infantry (3 months, 1861)

Brief History
The 1st Regiment, Ohio Infantry was organized at large from April 14 to April 29, 1861 and was mustered in April 17, 1861 for 3 months of service. It mustered out August 2, 1861 in Ohio.

For more information on the history of this unit, see:


 * The Civil War Archive section, 1st Regiment Infantry (3 months), (accessed 24 August 2012).
 * Larry Stevens' Ohio in the Civil War, 1st Ohio Infantry, gives brief histories of both the 3 month regiment and the 3 year regiment.
 * The Wikipedia article, 1st Ohio Infantry, gives brief histories of both the 3 month regiment and the 3 year regiment.
 * Ohio Civil War Central, 1st Regiment Ohio Volunteer Infantry (Three Months Service), (accessed 2 November 2016).

After it mustered out, a number of the men re-enlisted in the reconstituted 1st Regiment for 3 years.

Companies in this Regiment with the Counties of Origin
Men often enlisted in a company recruited in the counties where they lived though not always. After many battles, companies might be combined because so many men were killed or wounded. However if you are unsure which company your ancestor was in, try the company recruited in his county first.

The Civil War Soldiers and Sailors database lists 494 men on its roster for this unit. Roster.

For the counties for this regiment, see 1st Regiment, Ohio Infantry.

Field and Staff - Roster page 3

Company A - also known as "The Lancaster Guards". Many men were from Lancaster, Fairfield County. See Roster page 4.

Company B -Also known as "Lafayette Guards". Many men were from Dayton, Montgomery County - See Roster page 5

Company C - Also known as "Dayton Light Guards". Many men were from Dayton, Montgomery County - See Roster page 6

Company D - Also known as "Montgomery Guards". Many men were from Dayton, Montgomery County - See Roster page 8

Company E - Also known as "Cleveland Grays". Many men were from Cleveland, Cuyahoga County - See Roster page 9

Company F - Also known as "Hibernian Guards". Many men were from Cleveland, Cuyahoga County - See Roster page 11

Company G -Also known as "Porstmouth Guards". Many men were from Portsmouth, Scioto County - See Roster page 13

Company H - Also known as "Zanesville Guards". Many men were from Zanesville, Muskingum County - See Roster page 14. For history, see Ohio Civil War Central, Zanesville Guards.

Company I - Also known as "Mansfield Guards". Many men were from Mansfield, Richaland County - See Roster page 16

Company K -Also known as "Jackson Guards". Many men were from Hamilton, Butler County - See Roster page 17

Company rosters found in the Official Roster of the Soldiers of the State of Ohio in the War of the Rebellion, 1861 - 1866, vol. 1], Compiled under the direction of the Roster Commission. Published by authority of the General Assembly; The Werner Company, Akron Ohio 1893. (This is a 12 Volume set of books)

Other Sources

 * 1st Ohio Regiment Infantry (3 months), Civil War Index, which includes history, battles, and roster with name, rank, age, date entered service, period of service and remarks.


 * Beginning United States Civil War Research gives steps for finding information about a Civil War soldier. It covers the major records that should be used. Additional records are described in ‘Ohio in the Civil War’ and ‘United States Civil War, 1861 to 1865’ (see below).


 * National Park Service, The Civil War Soldiers and Sailors System, is searchable by soldier's name and state. It contains basic facts about soldiers on both sides of the Civil War, a list of regiments, descriptions of significant battles, sources of the information, and suggestions for where to find additional information.


 * Ohio in the Civil War describes many Confederate and Union sources, specifically for Ohio, and how to find them.. These include compiled service records, pension records, rosters, cemetery records, Internet databases, published books, etc.


 * United States Civil War, 1861 to 1865 describes and explains United States and Confederate States records, rather than state records, and how to find them. These include veterans’ censuses, compiled service records, pension records, rosters, cemetery records, Internet databases, published books, etc.