12th Regiment, Enrolled Missouri Militia (Union)
12th Regiment, Enrolled Missouri Militia was enrolled between 1 September 1862 and 19 September 1862. The Regiment was discharged in 15 May 1863. The Colonel in charge William Bailey.
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 - Captain George Thorhauer - Many men from St. Louis
Company B - Captains James S. Yost and Thomas Scott - Many men from St. Louis
Company C - Captain Joseph Kilpatrick - Many men from St. Louis
Company D - Captain Charles W. Horn - Many men from St. Louis
Company E - Captain John E. Sanders - Many men from St. Louis
Company F - Captain Lysander B. Trafton - Many men from St. Louis
Company G - Captain Henry Hannibal - Many men from St. Louis
Company H - Captains George W. Holibaugh and Henry Mack - Many men from St. Louis
Company I - Captain Henry Bischoff - Many men from St. Louis
Company K - Captain Edward Beckman - Many men from St. Louis
The above information about the companies with partial rosters is found in Kenneth E. Weant's book, Civil War Records Missouri Enrolled Militia Infantry, Volume 4 
- Beginning United States Civil War Research gives steps for finding information about a Civil War soldier or sailor. It covers the major records that should be used. Additional records are described in 'Missouri 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.
- Missouri in the Civil War describes many Confederate and Union sources, specifically for Missouri, 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.
- Kenneth E. Weant, Civil War Records Missouri Enrolled Militia Infantry Regiments, Volume 2 (Arlington, fckLRfckLRTexas : K.E. Weant, c2009), pages #77-92. FHL book 977.8 M2wka v.2