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Military branches:
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Army, Navy and Marine Corps, Air Force, and Coast Guard (Coast Guard administered in peacetime by the Department of Homeland Security, but in wartime reports to the Department of the Navy)
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Military manpower - military age:
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18 years of age (2004 est.)
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Military manpower - availability:
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males age 15-49: 73,597,731 (2004 est.)
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Military manpower - fit for military service:
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NA (2004 est.)
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Military manpower - reaching military age annually:
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males: 2,124,164 (2004 est.)
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Military expenditures - dollar figure:
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$370.7 billion (FY04 est.) (March 2003)
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Military expenditures - percent of GDP:
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3.3% (FY03 est.) (February 2004)
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