1st Colorado Infantry Regiment
| 1st Colorado Infantry Regiment | |
|---|---|
National color of the regiment | |
| Active | August 1861 to November 1862 |
| Country | United States |
| Allegiance | Union |
| Branch | Infantry |
| Engagements | American Civil War |
The 1st Colorado Infantry Regiment (officially the 1st Regiment of Colorado Volunteers) was a volunteer infantry regiment of the United States Army formed in the Colorado Territory in 1861 and active in the American West in the late 19th century.