| 12th Missouri Infantry Regiment | |
|---|---|
| Active | September 10, 1861, to October 1, 1864 |
| Country | United States |
| Allegiance | Union |
| Branch | Infantry |
| Engagements | Fremont's Springfield Expedition Battle of Pea Ridge Yazoo Pass Expedition Battle of Chickasaw Bayou Battle of Chickasaw Bluffs Battle of Fort Hindman Battle of Mississippi Springs Battle of Jackson Siege of Vicksburg (Includes Assaults on 19 & 22 May 1863) Siege of Jackson Battle of Bolton's Depot Battle of Canton Battle of Clinton, Mississippi Battle of Cherokee Station battle of Cane Creek Battle of Tuscumbia Battle of Chattanooga Battle of Lookout Mountain Battle of Ringgold Gap Battle of Taylor's Ridge Relief of Knoxville Battle of Resaca Battle of Dallas Battle of New Hope Church Battle of Allatoona Hills Battle of Brushy Mountain Battle of Kennesaw Mountain Battle of Nickajack Creek Battle of the Chattahoochee River Battle of Atlanta Siege of Atlanta Battle of Ezra Church Battle of Lovejoy's Station Pursuit of Hood |
The 12th Missouri Infantry Regiment was an infantry regiment that served in the Union Army during the American Civil War. The regiment was organized by Colonel Peter J. Osterhaus, a veteran of the respected 2nd Missouri Volunteer Infantry (3 months, 1861). The majority of the soldiers in the 12th were ethnic Germans. This intermixed German-American unit also had a large portion of its ranks filled by volunteers from Illinois.