The partisan rangers proved controversial among Confederate army regulars, who thought they encouraged desertion as well as morale problems in the countryside as potential soldiers would favor sleeping in their own (or friendly) beds and capturing booty to the hardships and privations of traditional military campaigns. Mosby was thus enrolled in the Provisional Army of the Confederate States and soon promoted to lieutenant colonel on January 21, 1864, and to colonel, December 7, 1864. Mosby carefully screened potential recruits, and required each to bring his own horse.