12th New Hampshire Infantry Regiment
| 12th New Hampshire Infantry Regiment | |
|---|---|
| Active | September 10, 1862, to June 21, 1865 | 
| Country | United States | 
| Allegiance | Union | 
| Branch | Infantry | 
| Size | 1,450 | 
| Engagements | |
| New Hampshire U.S. Volunteer Infantry Regiments 1861-1865 | ||||
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The 12th New Hampshire Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War. It was also a unit that existed for a time following the Revolutionary War (see the History of Fitzwilliam, NH (Norton), p. 351-353).