Japan

Military branches:
Japanese Ministry of Defense (MOD): Ground Self-Defense Force (Rikujou Jietai, GSDF), Maritime Self-Defense Force (Kaijou Jietai, MSDF), Air Self-Defense Force (Koku Jieitai, ASDF) (2009)
Military service age and obligation:
18 years of age for voluntary military service (2001)
Manpower available for military service:
males age 16-49: 27,819,804
females age 16-49: 26,863,794 (2008 est.)
Manpower fit for military service:
males age 16-49: 22,757,136
females age 16-49: 21,920,703 (2009 est.)
Manpower reaching militarily significant age annually:
male: 621,254
female: 589,270 (2009 est.)
Military expenditures:
0.8% of GDP (2006)