The 138th Infantry Regiment is an infantry regiment of the United States Army and the Missouri National Guard headquartered in Kansas City, Missouri.[1] Of the original regiment, only the 1st Battalion remains an active National Guard unit. As of 2018, the 1st Battalion, 138th Infantry Regiment is a light infantry battalion currently assigned to the 39th Infantry Brigade Combat Team.
The 138th Infantry Regiment traces its lineage from the St. Louis Greys, a volunteer militia company organized in 1832 and the first militia regiment of Missouri. The company's first combat action was during the Mexican War while serving with the St. Louis Legion, a battalion-sized element composed of independent St. Louis-area companies. The unit mustered into federal service on 18 May 1846 along with the Native American Rangers, Boone Guards, Montgomery Guards, Missouri Fusiliers and Riflemen, Morgan Riflemen, and the Texas Free Corps. By 1853 the Greys expanded to five companies to form the 1st Battalion, 1st Missouri Regiment but underwent a series of reductions until 1857 when all but one company of Greys remained.
During the Missouri-Kansas border crises in 1860, the First Missouri Infantry Regiment (of which the Greys were a part along with several other St. Louis area militia companies), patrolled the border to prevent Free-Stater (Kansas) settlers from entering the state, an action called the Southwest Expedition.
The Crest in the Picture is the one you will recieve.