Military branches:
Republic of Korea Army, Navy (includes Marine Corps), Air Force (2009)

Military service age and obligation:
20-30 years of age for compulsory military service, with middle school education required; conscript service obligation - 21 months (Army, Marines), 23 months (Navy), 24 months (Air Force); 18-26 years of age for voluntary military service; women, in service since 1950, admitted to 7 service branches, including infantry, but excluded from artillery, armor, anti-air, and chaplaincy corps; some 4,000 women serve as commissioned and noncommissioned officers, approx. 2.3% of all officers; HIV-positive individuals are exempt from military service (2010)

Manpower available for military service:
males age 16-49: 13,274,442
[see also: Manpower available for military service - males age 16-49 country ranks ]
females age 16-49: 12,542,699 (2010 est.)
[see also: Manpower available for military service - females age 16-49 country ranks ]

Manpower fit for military service:
males age 16-49: 10,929,625
[see also: Manpower fit for military service - males age 16-49 country ranks ]
females age 16-49: 10,264,608 (2010 est.)
[see also: Manpower fit for military service - females age 16-49 country ranks ]

Manpower reaching military service age annually:
male: 370,645
[see also: Manpower reaching military service age annually - male country ranks ]
female: 321,765 (2010 est.)
[see also: Manpower reaching military service age annually - female country ranks ]

Military expenditures:
2.7% of GDP (2006)
country comparison to the world: 52
[see also: Military expenditures country ranks ]