4th Regiment, Enrolled Missouri Militia Cavalry (Union)
The 1st Regiment, Enrolled Missouri Militia Cavalry was enrolled between 25 July 1861 and 4 September 1861. They were mustered between 27 August 1861 and 28 February 1862. The regiment was discharged between 18 October 1864 and 31 November 1865. The Colonel in charge was Colonel George E. Waring Jr. 
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 Ocsar P. Howe Many men from St. Louis, Missouri
Company B - Theodore W. Hencke
Company C - Major Gottlieb L. Rose
Company D - Major Edwin Langen - St. Louis, Missouri
Company E - Captain Oscar P. Howe - Many men from Chicago, Illinois
Company F - Captain Gustave Illig, and Captain Rudolph Georgie - Many men from St. Louis, Missouri
Company G - Captain C. H. L. Groffman - Many men from Illinois
Company H - Captain Max Unrich
Company I - Captain William T. Burns - Many men from St. Louis, Missouri
Company K - Captain Herman Kemper - Many men from St.Louis, Missouri
Company L Major James F. (I.) Dwight - Illinois
Company M - Captain Charles P. Knispel - Chicago, Illinois
The above information about the companies with partial rosters is found in Kenneth E. Weant's book,Civil War Records: Union Troops Enrolled Missouri Militia,Volume 3.
- 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: Union Troops Enrolled Missouri Militia, Volume 3 (Arlington, Texas : K.E. Weant, c2007), pages 79-96. FHL book 977.8 M2wkc v. 3