56th Illinois Infantry Regiment
| 56th Regiment Illinois Volunteer Infantry | |
|---|---|
Monument to 56th Illinois Infantry Regiment at Vicksburg National Military Park  | |
| Active | February 27, 1862, to August 12, 1865 | 
| Country | United States | 
| Allegiance | Union | 
| Branch | Infantry | 
| Engagements | Battle of Corinth Battle of Champion's Hill Battle of Big Black River Siege of Vicksburg March to the Sea Battle of Bentonville  | 
The 56th Regiment Illinois Volunteer Infantry was an infantry regiment that served in the Union Army during the American Civil War.