The 12th Regiment, Indiana Cavalry (Union) was organized on December 10, 1863 in LaPorte and Noble Counties, Indiana and served in the Western Theater. It mustered out of service on November 10, 1865. (NPS-BU)
See also: https://www.nps.gov/civilwar/search-battle-units.htm#sort=score+desc&q=12th&fq%5B%5D=Side%3A%22Union%22&fq%5B%5D=State%3A%22Indiana%22&fq%5B%5D=Battle_Unit_Function%3A%22Cavalry%22
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