| 15th Regiment,Illinois Volunteer Cavalry | |
|---|---|
 Illinois flag | |
| Active | 25 December 1862 to 31 August 1865 |
| Country | United States |
| Allegiance | Union |
| Branch | Cavalry |
| Illinois U.S. Volunteer Cavalry Regiments 1861-1865 | ||||
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The 15th Regiment of the Illinois Volunteer Cavalry was a volunteer cavalry regiment that served in the Union Army during the American Civil War.