Jefferson Barracks is believed to be haunted by a long history of tragedy, conflict, and military service, dating back to its establishment in 1826. The area, which served as a crucial US military installation, including a bootcamp and home to hundreds of thousands of buried veterans, is a site of frequent reports of supernatural activity attributed to the many spirits and soldiers who died or suffered on the grounds. As the oldest operating U.S. military installation west of the Mississippi River, the barracks have a long and complex history. Its status as a military post, which was active from 1826 through the end of World War II, resulted in numerous deaths and hardships for those stationed or buried there. With hundreds of thousands of veterans buried at the National Cemetery within Jefferson Barracks, many believe that their spirits remain on the site. The area's long history of conflict, illness, violence, and other forms of suffering contributes to the perception of it being a haunted location. There are widespread stories of ghosts and spirits existing on the grounds, with some reports dating back to before the Civil War. Locals and visitors have reported sightings of supernatural beings, contributing to its eerie reputation. Stories of ghosts and spirits are a common topic in the local community and historical accounts of the area.