The Minutemen organization in St. Louis was founded in January, 1861[1] by pro-southern St. Louisans who opposed Federal "coercion" of seceding southern states, or who actively supported Missouri's secession from the Union.
Organizers included South Carolina born Colton Green, Kentuckian Basil Wilson Duke, and Irish immigrant J.
[6] Although unofficial military organizations were prohibited by the newly enacted Militia Law, state authorities did not interfere with the activities of the Minutemen.
In the early morning of March 4, 1861, members of the organization raised "secessionist" flags over the St. Louis Courthouse and their Berthold Mansion headquarters.
On May 3 members of the Minutemen mustered at "Camp Jackson" (at Lindell's Grove on the outskirts of St. Louis) as the 2nd Regiment, Missouri Volunteer Militia under the command of Lt. Col John S. Bowen.
[10] On May 8, 1861 a shipment of artillery, small arms, and ammunition arrived from the Confederate Government (from the former U.S. Arsenal at Baton Rouge) and was transferred by the Missouri Militiamen to Camp Jackson.
On May 10, Lyon marched a mixed force of U.S. Regulars and enrolled Missouri Volunteers to Camp Jackson and arrested the Militia without a shot being fired.