| 12th Illinois Infantry Regiment | |
|---|---|
| Active | May 2, 1861 to July 18, 1865 |
| Country | .svg){kind=small} United States |
| Allegiance | Union |
| Branch | Infantry |
| Size | Regiment |
| Garrison/HQ | Cairo, Illinois |
| Engagements | Battle of Shiloh Battle of Corinth Battle of Resaca Battle of Atlanta Battle of Jonesboro March to the Sea Battle of Bentonville |
The 12th Illinois Infantry Regiment, also known as the 1st Scotch Regiment, was an infantry regiment that served in the Union Army between May 2, 1861 and July 18, 1865, during the American Civil War.