Military and security service personnel strengths | approximately 1.31 million active-duty personnel (446,000 Army; 328,000 Navy; 317,000 Air Force; 9,000 Space Force; 167,000 Marine Corps; 40,000 Coast Guard); 330,000 Army National Guard; 105,000 Air National Guard (2024) |
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Military equipment inventories and acquisitions | the US military's inventory is comprised almost entirely of domestically produced weapons systems (some assembled with foreign components) along with a smaller mix of imported equipment from a variety of Western countries such as Germany and the UK; the US defense industry is capable of designing, developing, maintaining, and producing the full spectrum of weapons systems; the US is the world's leading arms exporter (2024) |
Military service age and obligation | 18 years of age (17 years of age with parental consent) for voluntary service for men and women; no conscription (currently inactive, but males aged 18-25 must register with Selective Service in case conscription is reinstated in the future); maximum enlistment age 34 (Army), 42 (Air Force/Space Force), 39 (Navy), 28 (Marines), 31 (Coast Guard); 8-year service obligation, including 2-5 years active duty (Army), 2 years active duty (Navy), 4 years active duty (Air Force, Coast Guard, Marines, Space Force) (2024). note 1: the US military has been all-volunteer since 1973, but an act of Congress can reinstate the draft in case of a national emergency note 2: all military occupations and positions open to women; in 2022, women comprised 17.5% of the total US regular military personnel note 3: non-citizens living permanently and legally in the US may join as enlisted personnel; they must have permission to work in the US, a high school diploma, and speak, read, and write English fluently; minimum age of 17 with parental consent or 18 without; maximum age 29-39, depending on the service; under the US Nationality Act, honorable service in the military may qualify individuals to obtain expedited citizenship; under the Compact of Free Association, citizens of the Federated States of Micronesia, the Republic of Palau, and the Republic of the Marshall Islands may volunteer; under the Jay Treaty, signed in 1794 between Great Britain and the US, and corresponding legislation, Native Americans/First Nations born in Canada are entitled to freely enter the US and join the US military |
Military deployments | the US has more than 200,000 air, ground, and naval personnel deployed overseas on a permanent or a long-term rotational (typically 3-9 months) basis; key areas of deployment include approximately 5,000 in Africa, approximately 100,000 in Europe, approximately 10-15,000 in Southwest Asia, and more than 80,000 in East Asia (2024). |
Military expenditures | |
Military Expenditures 2024 | 3.4% of GDP (2024 est.) |
Military Expenditures 2023 | 3.2% of GDP (2023) |
Military Expenditures 2022 | 3.3% of GDP (2022) |
Military Expenditures 2021 | 3.5% of GDP (2021) |
Military Expenditures 2020 | 3.6% of GDP (2020) |
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