Trans-Mississippi Department

From Wikipedia, the free encyclopedia

Map of the CSA; the Trans-Mississippi Department covered all land west of the Mississippi.
Battles fought in the Trans-Mississippi Department
Dr. Edmund Lewis Massie of the Trans-Mississippi Department

The Trans-Mississippi Department was a geographical subdivision of the Confederate States Army comprising Arkansas, Missouri, Texas, western Louisiana, Arizona Territory and the Indian Territory; i.e. all of the Confederacy west of the Mississippi River. It was the last military department to surrender to United States forces in 1865.


The Trans-Mississippi Department was established on May 26, 1862, at Little Rock, Arkansas. It absorbed the previously established Trans-Mississippi District (Department Number Two) which had been organized on January 10, 1862, to include the Indian Territory, Missouri, Arkansas (except for the country east of St. Francis County, Arkansas, to Scott County), Missouri, and that part of Louisiana north of the Red river. The Trans-Mississippi Department had its headquarters at Shreveport, Louisiana, and Houston, Texas. It was responsible for the Confederate theater of operations west of the Mississippi. Its forces were sometimes referred to as "Army of the Southwest" and, as a result of being largely cut off from the Confederate government in Richmond late in the War, became popularly known as "Kirby-Smithdom".[1]

Commanding generals[edit]


  1. ^ Jones, Terry (2002). Historical Dictionary of the Civil War. Lanham, Md.: Scarecrow Press. p. 785. ISBN 9780810841123.

Further reading[edit]