Military branches:
Japanese Ministry of Defense (MOD): Ground Self-Defense Force (Rikujou Jieitai, GSDF), Maritime Self-Defense Force (Kaijou Jieitai, MSDF), Air Self-Defense Force (Koukuu Jieitai, ASDF) (2011)
Military service age and obligation:
18 years of age for voluntary military service; Maritime Self-Defense Force mandatory retirement at age 54 (2011)
Manpower available for military service:
males age 16-49: 27,301,443
[see also: Manpower available for military service - male country ranks ]
females age 16-49:
26,307,003 (2010 est.)
Manpower fit for military service:
males age 16-49: 22,390,431
[see also: Manpower fit for military service - male country ranks ]
females age 16-49:
21,540,322 (2010 est.)
Manpower reaching militarily significant age annually:
male: 623,365
[see also: Manpower reaching militarily significant age annually - male country ranks ]
female:
591,253 (2010 est.)
Military expenditures:
0.8% of GDP (2006)
country comparison to the world: 149
[see also: Military expenditures country ranks ]