In fact, military service was not equally imposed on the people so that, for example, in Tang China, people in Jiangnan were exempted from almost all of their military services, and in Japan, only the people of the Kanto region were required to serve as frontier guards.
ただし、唐代の江南では兵役がほぼ免除されていたり、日本では東国（関東地方）ばかりが防人の兵役義務を負っていたなど、必ずしも一律的に兵役が課されていないという実態があった。