Age limits and citizenship requirements for joining the U.S. military – Check out all the details
The U.S. Armed Forces offer service opportunities for citizens and lawful permanent residents. Each branch has specific age limits for enlistment, and military service can provide a pathway to U.S. citizenship for those who meet certain requirements.

The United States military offers opportunities for both citizens and lawful permanent residents who wish to serve the country. In addition to national defense, military service can provide a pathway for non-citizens to obtain U.S. citizenship. However, it's essential to understand the age requirements and conditions associated with this process. Each branch of the U.S. Armed Forces has specific age limits for enlistment. These limits ensure that recruits can meet the physical and mental demands of service. Below are the age requirements for each branch.

Army service pays off for new Soldiers. Photo: Army.mil.
Age limits by military branch
- Army: 17 to 35 years
- Marine Corps: 17 to 28 years
- Air Force: 17 to 42 years
- Space Force: 17 to 42 years
- Coast Guard: 17 to 41 years
- Navy: 17 to 41 years
Although the general age limit for the Army is 35, exceptions exist. In cases where specific skills are needed or there are special requirements, age waivers may be granted. These waivers are evaluated individually based on the military’s current needs. If a person is over the age limit and still wants to serve for their country, the navy may lift some restrictions based on the need to fill certain positions’, they explained on their website. It’s also possible to receive an age exemption, especially for citizens with previous experience.

Why Immigrants Serve in U.S. Military. It's Not to Gain Citizenship. Photo: FlagerLive.
Naturalization process for military personnel
Serving in the U.S. Armed Forces can expedite the naturalization process for lawful permanent residents. The general requirements include:
- Minimum age: 18 years
- Active service: Must have honorably served for at least one year during peacetime
- Residency and physical presence: No need to meet the usual continuous residence and physical presence requirements
- English proficiency: Ability to read, write, and speak English
- Civic knowledge: Basic understanding of U.S. history and government
- Good moral character: Must demonstrate good moral character during the period of service
Interested individuals should consult official sources or speak with a military recruiter for up-to-date information about enlistment and naturalization. Military policies may change, so staying informed about the specific requirements and opportunities available is crucial. If the applicant meets all eligibility criteria, they can submit their documents and application by mail or online with an Uscis account. When the agency receives the form, fingerprints will be taken and an interview will be scheduled at one of their offices.