Military branches:

Australian Defense Force (ADF): Australian Army, Royal Australian Navy, Royal Australian Air Force, Special Operations Command (2006)

Military service age and obligation:

17 years of age for voluntary military service (with parental consent); no conscription; women allowed to serve in Army combat units in non-combat support roles (2008)

Manpower available for military service:

males age 16-49: 4,999,988
females age 16-49: 4,870,043 (2008 est.)

Manpower fit for military service:

males age 16-49: 4,137,176
females age 16-49: 4,022,588 (2008 est.)

Manpower reaching militarily significant age annually:

males age 16-49: 146,248
females age 16-49: 139,697 (2008 est.)

Military expenditures - percent of GDP:

2.4% (2006)