| 9th Ohio Infantry Regiment | |
|---|---|
| Active | 1861–1865 |
| Country | United States of America |
| Allegiance | Union |
| Branch | Union Army |
| Type | Infantry |
| Size | ~950 soldiers (initial) |
| Nickname(s) | Die Neuner (The Niners) |
| Engagements | |
| Commanders | |
| Notable commanders | Col. Robert L. McCook |
| Ohio U.S. Volunteer Infantry Regiments 1861-1865 | ||||
|
The 9th Ohio Infantry Regiment was an infantry regiment that was a part of the Union Army during the American Civil War.[1] The members of the regiment were primarily of German descent and the unit was the first almost all-German unit to enter the Union Army.[2]