| 30th Missouri Infantry Regiment | |
|---|---|
| Active | October 1862 to August 31, 1865 |
| Country | United States |
| Allegiance | Union |
| Branch | Infantry |
| Engagements | Yazoo Pass Expedition Battle of Chickasaw Bayou Battle of Chickasaw Bluffs Arkansas Post Expedition Battle of Fort Hindman Siege of Vicksburg May 19 & May 22 Assaults Siege of Jackson Battle of Vidalia, MS Siege of Spanish Fort and Fort Blakeley Assault on Fort Blakeley Occupation of Mobile |
The 30th Missouri Infantry Regiment, also known as the Shamrock Regiment was an infantry regiment that served in the Union Army during the American Civil War. It was a sister unit to the 7th Missouri Infantry Regiment (the "Irish Seventh") and in 1864 was consolidated with a battalion of veteran volunteers of that regiment and operated as a "demi-brigade" known popularly as the "Missouri Irish Brigade".