21st Pennsylvania Infantry Regiment
| 21st Pennsylvania Volunteer Infantry | |
|---|---|
Pennsylvania flag | |
| Active | April 20, 1861 – August 9, 1861 |
| Country | United States |
| Allegiance | Union |
| Branch | United States Army Union Army |
| Type | Infantry |
| Nickname(s) | Philadelphia Light Guard |
| Commanders | |
| Colonel | John F. Ballier |
| Pennsylvania U.S. Volunteer Infantry Regiments 1861–1865 | ||||
|
The 21st Pennsylvania Volunteer Infantry was a three-month infantry regiment that served in the Union Army during the American Civil War.