21st Mississippi Infantry Regiment
| 21st Mississippi Infantry Regiment | |
|---|---|
| Active | 1861–1865 |
| Country | Confederate States |
| Allegiance | Mississippi |
| Branch | Army |
| Type | Infantry |
| Size | Regiment |
| Battles | American Civil War |
| Commanders | |
| Notable commanders | William L. Brandon Benjamin G. Humphreys |
The 21st Regiment, Mississippi Infantry was a Confederate infantry regiment from Mississippi in the American Civil War. The regiment was involved in several well-known battles including the battles of Antietam, Chancellorsville, Gettysburg and Chickamauga.