note: the Coast Guard is normally subordinate to the Department of Transportation, but in wartime reports to the Department of the Navy
Military manpower - military age: 18 years of age
Military manpower - availability: males age 15-49: 70,502,691 (2000 est.)
Military manpower - fit for military service: males age 15-49: 2,056,762 (2000 est.)
Military expenditures - dollar figure: $276.7 billion (FY1999 est.)
Military expenditures - percent of GDP: 3.2% (FY1999 est.)
The United States is a party to the Australia, New Zealand, United States security treaty and the NATO treaty.