Military branches: National Defense Secretariat (includes Army and Air Force), Navy Secretariat (includes Naval Air and Marines)
Military manpower - military age:
18 years of age
note:
starting in 2000, females will be allowed to volunteer for military service
Military manpower - availability:
males age 15-49:
26,171,141 (2000 est.)
Military manpower - fit for military service:
males age 15-49:
19,022,012 (2000 est.)
Military manpower - reaching military age annually:
males:
1,073,809 (2000 est.)
Military expenditures - dollar figure: $4 billion (FY99)
Military expenditures - percent of GDP: 1% (FY99)