St. Louis Arsenal

38°35′26″N 90°12′31″W / 38.590619°N 90.208504°W / 38.590619; -90.208504

The St. Louis Arsenal is a large complex of federal military weapons and ammunition storage buildings operated by the United States Air Force in St. Louis, Missouri. During the American Civil War, the St. Louis arsenal's contents were transferred to Illinois by Union Captain Nathaniel Lyon, an act that helped fuel tension between secessionists and those citizens loyal to the Federal government.^{[citation needed]}