12th Regiment, Connecticut Infantry
The 12th Regiment, Connecticut Infantry was organized at Hartford, Connecticut and was mustered in from November 19th to the 3rd of December, 1861. This regiment was mustered out of service on August 12, 1865. 
For more information on the history of this unit, see:
- The Civil War Archive section, 12th Regiment Infantry, (accessed 13 April 2012).
Companies in this Regiment
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. This regiment was composed of men from all parts of Connecticut.
- Connecticut. Adjutant General's Office, Catalogue of Connecticut volunteer organizations, with additional enlistments and casualties to July 1, 1864, (Hartford, Connecticut : Case, Lockwood, 1864), page 437. Available Online at Internet Archive, (accessed 8 Mar 2011). Also available at the Family History Library, FHL US/CAN Book 974.6 M2a, or FHL US/CAN Film 1550802.
- Adjutant General's Office, Catalogue of Connecticut volunteer organizations : (infantry, cavalry, and artillery,) in the service of the United States, 1861-1865, with additional enlistments, casualties, &c., &c., and brief summaries, showing the operations and service of the several regiments and batteries, (Bethesda, Maryland : University Publications of America, c1991), page 504. Includes index. Online at Internet Archive, (accessed 8 Mar 2011). Also available at the Family History Library, FHL US/CAN Fiche 6082887. or FHL US/CAN Film 1033670 Item 1.
- 12th Connecticut Regiment Graves, (accessed 9 Mar 2011). Roster by Name and Roster by Unit
- 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 ‘Connecticut 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.
- Connecticut in the Civil War describes many Confederate and Union sources, specifically for Connecticut, 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.
- Footnote.com, (accessed 2 Apr 2011). (A subscription website, but is available for use at the Family History Library and some Family History Centers). It has digital Civil War soldier service records and brief regiment histories (located at the bottom of some of the muster rolls).
- The Civil War in the East, (accessed 9 Mar 2011). Timeline of the 12th Connecticut Infantry Regiment
- DeForest, John William, "A Union Captain's Record of the Civil War," (New Haven : Yale University Press, London G. Cumberlege, Oxford University Press, 1946). De Forest was a Captain in the 12th Connecticut, taking part in the capture of New Orleans, the Port Hudson Campaign, and the Battle of Cedar Creek, Virginia. "De Forest's gifted pen revealed the drudgery of camp life in Louisiana, the devastating affects of 'swamp fever,' the miseries of marching, and the realities of battle. This book can be found at worldcat, (accessed 9 Mar 2011).
- National Park Service, The Civil War Soldiers and Sailors System, (accessed 6 December 2010.