Tompkins' Battery, Rhode Island Light Artillery (3 months, 1861)
The Tompkins' Battery, Rhode Island Light Artillery was organized at Providence for three months' service April, 1861. It was mustered out August 2, 1861. 
For more information see, "www.civilwararchive.com/Unreghst/unriarty.htm".
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.
- 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 ‘Mississippi 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.
- Rhode Island in the Civil War describes many Confederate and Union sources, specifically for Mississippi, 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.
- Capt. John Tompkins' Official Report - Captain First Rhode Island Light Artillary, Company A
- Charles H. Tompkins biography in, Memoirs of Rhode Island Officers who were engaged in the service of their country during the Great Rebellion of the South, by John Russell Bartlett. page 373
- National Park Service, The Civil War Soldiers and Sailors System (accessed 11 January 2011)