On September 3, 1863, Col. E.B. Alexander, Acting Assistant Provost Marshal General in St. Louis, writes to Capt. William Fowler, Provost Marshal for the 7th District of Missouri, in St. Joseph, Missouri. Alexander instructs Fowler not to enroll anyone who is "in the Rebel service." He adds that if any such men have been enrolled, their names must be stricken from the enrollment lists.