Jefferson Barracks Military Post - Mexican-American War

Mexican-American War

Jefferson Barracks became a major military post during the Mexican-American War (1846–1848) when it served as a rest and supply station for most U.S. troops deploying to Mexico. Jefferson Barracks was the recruiting center for outfitting and training most of the regiments organized for the Mexican War in 1846, and upon the return of the triumphant U.S. forces in 1848, many were deployed to Jefferson Barracks due to its strategic location and healthful situation.

In 1853, newly-elected President Franklin Pierce,who had served as a brigadier general during the Mexican War, appointed Jefferson Davis as his Secretary of War.

At Jefferson Barracks, Davis soon organized the 2nd U.S. Dragoons, known derisively as "Jeff Davis's Pets," because the commissioned personnel assigned to them were the best in the Army. Albert Sidney Johnston served as colonel and Robert E. Lee as lieutenant colonel. A list of the officers of the 2nd U.S. Dragoons includes some of the ablest commanders of the U.S. Civil War.