21st Indiana Volunteer Infantry Regiment (1st Regiment, Indiana Heavy Artillery)
1861-07-24 to 1866?
Organized at Indianapolis, Indiana, on July 24, 1861. Re-designated as the 1st Regiment, Indiana Heavy Artillery in February 1863. Mustered out of service in 1866. Commander(s): Colonel John W. McMillan, John A. Keith, and Benjamin F. Hays.
Citation
21st Indiana Volunteer Infantry Regiment (1st Regiment, Indiana Heavy Artillery). Accessed via the Civil War Governors of Kentucky Digital Documentary Edition, https://discovery.civilwargovernors.org/document/S32213951 (November 12, 2026).
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