Trans-Mississippi Department

Trans-Mississippi Department
Active1862–1865
DisbandedMay 26, 1865
Country Confederate States
Branch Army
TypeTerritorial department
Headquarters
Wars

The Trans-Mississippi Department was a territorial department of the Confederate States Army that included Arkansas, Louisiana west of the Mississippi River, Texas (including what is now New Mexico and Arizona), and the Indian Territory. It was the last department to surrender to United States forces at the end of the American Civil War.