 Following the period of active military service ("gen-eki"), which lasted for three years, the soldiers became part of the first Reserve ("yōbi") and then the second Reserve ("kōbi").All young and able-bodied men who did not receive basic military training due to exceptions and those conscripts who had not fully met the physical requirements of military service, became third Reserve ("hojū").In the time of war, the first Reserve ("yōbi") were to be called up first and they were intended to fill in the ranks of the regular army units.