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United States Military Profile 2019

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Military branches
United States Armed Forces: US Army, US Navy (includes Marine Corps), US Air Force, US Coast Guard (administered in peacetime by the Department of Homeland Security, but in wartime reports to the Department of the Navy), National Guard (Army National Guard and Air National Guard) (2019)
Military service age and obligation
18 years of age (17 years of age with parental consent) for male and female voluntary service; no conscription; maximum enlistment age 34 (Army), 39 (Air Force), 39 (Navy), 28 (Marines), 31 (Coast Guard); 8-year service obligation, including 2-5 years active duty (Army), 2 years active (Navy), 4 years active (Air Force, Marines, Coast Guard); all military occupations and positions open to women (2019)
Military expenditures
3.16% of GDP (2018)
3.11% of GDP (2017)
3.21% of GDP (2016)
3.27% of GDP (2015)
3.48% of GDP (2014)

Source: CIA World Factbook
This page was last updated on December 7, 2019

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