Military branches: Japan Ground Self-Defense Force (Army), Japan Maritime Self-Defense Force (Navy), Japan Air Self-Defense Force (Air Force)
Military manpower - military age: 18 years of age
Military manpower - availability: males age 15-49: 29,926,614 (2001 est.)
Military manpower - fit for military service: males age 15-49: 25,876,484 (2001 est.)
Military manpower - reaching military age annually: males: 765,817 (2001 est.)