The Missouri National Guard traces its origins to the Missouri State Militia, which was federally funded state militia conceived in 1861 and called to service in 1862 during the Civil War. It was a force designed to protect Missouri from Confederate guerillas. To learn more about the Missouri State Militia, click here
The Missouri Air National Guard was established following World War II, in 1947. The Air Guard was first mobilized en masse during the Korean War. To learn more about the Missouri Air National Guard, click here and here.