Military branches:
Army, Navy (includes Marine Corps), Air Force, Coast Guard Administration, Armed Forces Reserve Command, Combined Service Forces Command, Armed Forces Police Command

Military service age and obligation:
19-35 years of age for male compulsory military service; service obligation 14 months (reducing to 1 year in 2009); women may enlist; women in Air Force service are restricted to noncombat roles; reserve obligation to age 30 (Army); the Ministry of Defense has announced plans to implement an incremental voluntary enlistment system beginning 2010, with 10% fewer conscripts each year thereafter, although nonvolunteers will still be required to perform alternative service or go through 3-4 months of military training (2009)

Manpower available for military service:
males age 16-49: 6,283,134
females age 16-49: 6,098,599 (2008 est.)

Manpower fit for military service:
males age 16-49: 5,106,730
females age 16-49: 5,008,563 (2009 est.)

Manpower reaching militarily significant age annually:
male: 165,738
female: 154,123 (2009 est.)

Military expenditures:
2.2% of GDP (2006)