- Seizure of the Liberty Arsenal (April 20, 1861)
Early in the Civil War, this federal arsenal located near Liberty, Missouri fell to a group of Southern sympathizers in what has been called the "Fort Sumter of Missouri." After capturing more than 1,000 muskets, they made the secession of northwestern Missouri appear to be a possibility. The arms were later used by the Missouri State Guard and secessionist militias. The site is located west of Missouri State Highways 291 and 210, near "Arsenal Hill."