The Confederacy's problem was a diminishing pool of white males of military age. By 1864 (if not even sooner), the Confederacy had pretty much eked out this pool, even with expanding the age range and eliminating many conscription exemptions. So conscription, for all its flaws and opposition it entailed, was still the only realistic option. In fact, the conscription law was originally promulgated in March 1862, in part because of the difficulty the Confederacy was having in getting its original 1 year soldiers to re-enlist.