Lexington was the site of two of the largest battles in the western campaign of the American Civil War. The better-known Battle of Lexington is commonly referred to as the Battle of the Hemp Bales. On September 12, 1861, between 6,000 and 10,000 soldiers of the Missouri State Guard, led by Major General Sterling Price, began a siege against the Federal military post in the old Masonic College commanded by Colonel James A. Mulligan.