37th Iowa Infantry Regiment
| 37th Iowa Infantry Regiment | |
|---|---|
Iowa state flag | |
| Active | December 15, 1862, to May 24, 1865 |
| Country | United States |
| Allegiance | Union |
| Branch | Infantry |
The 37th Iowa Infantry Regiment, nicknamed the "Graybeard Regiment", was an infantry regiment that served in the Union Army during the American Civil War.