66th Regiment, Ohio Infantry

United States  U.S. Military   Ohio    Ohio Military   Ohio in the Civil War   Ohio Civil War Union Units 66th through 115th   66th Regiment, Ohio Infantry

Brief History
The 66th Regiment, Ohio Infantry mustered in December 17, 1861 at Camp McArthur, Urbana, Ohio. They were mustered out July 15, 1865 at Louisville, Kentucky.

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


 * Larry Stevens' Ohio in the Civil War, 66th Ohio Infantry.
 * The Civil War Archive section, 66th Regiment Infantry, (accessed 31 August 2012).

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.

Company A - Many men from

Company B - Many men from

Company C - Many men from

Company D - Many men from

Company E - Many men from

Company F - Many men from Union County. See Roster.

Company G - Many men from

Company H - Many men from Hancock County

Company I - Many men from

Company K - Many men from Morrow County

Company M - Many men from

The Civil War Soldiers and Sailors database lists 2,619 men on its roster for this unit. Roster.

Other Sources

 * 66th Ohio Regiment Infantry, 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.


 * Smith, Josiah D. The Civil War diary of Josiah D. Smith, 1861-1865 : Federal Army, Company G, 66th Regiment, Ohio Volunteer Infantry. (Winchester, Indiana : Randolph County Historical Society, c2006),