12th Regiment, Pennsylvania Infantry (3 months, 1861)

Brief History
This regiment was organized at Pittsburg April 22, 1861. It mustered out August 5, 1861.

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.

Field and Staff Officers - See Roster

Company A - Men recruited at Pittsburg, Allegheny County - See Roster

Company B - Men recruited at Pittsburg, Allegheny County - See Roster

Company C - Men recruited at Pittsburg, Allegheny County - See Roster

Company D - Men recruited at Pittsburg, Allegheny County - See Roster

Company E - Men recruited at Washington, Washington County - See Roster

Company F - Men recruited at New Castle, Lawrence County - See Roster

Company G - Men recruited at Monongahela City, Washington County - See Roster

Company H - Men recruited at New Castle, Lawrence County - See Roster

Company I - Men recruited at Pittsburg, Allegheny County - See Roster

Company K - Men recruited at Pittsburg, Allegheny County - See Roster

The Civil War Soldiers and Sailors database lists 961 men on its roster for this unit. Roster.

Other Sources

 * 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 ‘Pennsylvania 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.


 * Pennsylvania in the Civil War describes many sources, specifically for Pennsylvania, 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.


 * PaRoots gives a history of this regiment, its battles and organization. Also has rosters for each company.


 * Ranger92 quotes Samuel Bates' history of this regiment. It also has a roster for each company.