Age requirements
To join the Military, you need to be at least 18 — or 17 with parental consent. If you’re applying to a Service academy, you’ll have to meet that age requirement as of July 1 on your intended year of entry. The maximum age for enlistment varies by branch — from 28 in the Marines to 42 in the Air Force and Space Force.
Educational requirements
Generally, a high school diploma (or accepted alternative credential) is a good place to start. You can also enlist with a GED certificate, although this may limit your opportunities in some Service branches.
Physical fitness standards
While requirements vary across Service branches, you should try to be in good physical condition, of appropriate weight and able to pass a standard physical screening.
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Background checks
For safety and security, and to uphold the high standards of the Military, you’ll be expected to complete a background check. If you have any convictions on your record, you’re generally ineligible to join the Military. However, each branch has its own policy and, in certain cases, may grant moral conduct waivers or felony waivers.
Citizenship and residency requirements
If you’re a U.S. citizen or legal permanent resident, you’ve got this part covered. You can also enlist as a properly documented noncitizen, although your opportunities may be limited.
Branch-specific requirements
No two Service branches are alike — and in addition to everything listed above, each may have its own unique requirements.
Learn More About Each Service Branch