| 12th Michigan Infantry Regiment | |
|---|---|
 Michigan state flag | |
| Active | December 9, 1861, to February 15, 1866 |
| Country | United States |
| Allegiance | Union |
| Branch | Infantry |
| Engagements | Battle of Shiloh Siege of Vicksburg |
The 12th Michigan Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War.
The 12th Michigan Infantry was organized at Niles, Dowagiac, and Buchanan, Michigan, and was mustered into Federal service for a three-year enlistment between December 9, 1861, and March 5, 1862 .
The regiment was mustered out on February 15, 1866.
The regiment suffered 1 officer and 52 enlisted men who were killed in action or mortally wounded and 3 officers and 372 enlisted men who died of disease, for a total of 428 fatalities.[1]