Do You Have to Be a Citizen to Join the Military?

You do not have to be a citizen to join the military, but you do need one of a few specific legal statuses. Federal law limits enlistment to U.S. citizens, U.S. nationals, lawful permanent residents holding a Green Card, and citizens of three Pacific Island nations that have special agreements with the United States.¹ Anyone outside those four groups cannot enlist in any branch right now. If you do qualify as a non-citizen, expect some limits on the jobs open to you, and expect a faster path to citizenship than civilian applicants get.

Who Can Enlist Without Being a Citizen

A valid Permanent Resident Card (Form I-551, the Green Card) is enough to enlist in the Army, Navy, Air Force, Marine Corps, Coast Guard, or Space Force.² The card must be current, and the Army requires at least six months of validity remaining at the time of enlistment.³

U.S. nationals who are not full citizens, such as people born in American Samoa or Swains Island, enlist on the same general terms as citizens and meet the same physical and aptitude standards.¹

The category people miss most often: citizens of the Federated States of Micronesia, the Republic of the Marshall Islands, and Palau. These three nations hold Compacts of Free Association with the United States that allow their citizens to serve in the U.S. armed forces, and more than a thousand currently do across all branches.¹

You cannot use military service as a way to enter the country or to obtain a visa. Anyone on temporary status is ineligible, including student visas, tourist visas, and work visas. DACA recipients also cannot currently enlist. From 2009 to 2017, the Military Accessions Vital to the National Interest (MAVNI) program did allow certain non-permanent residents with critical language skills or medical training to enlist, but the Department of Defense let that authorization expire on September 30, 2017, and has not renewed it.⁴

English Fluency Is a Hard Requirement

Every non-citizen applicant must speak, read, and write English fluently.² If a recruiter or processing station spots a language barrier, you’ll be sent to the English Comprehension Level Test (ECLT). The Army requires a minimum ECLT score between 40 and 74 for applicants whose first language is not English, and anyone who has lived in the United States for less than one year is automatically required to take it.⁵

Basic training, safety protocols, and orders are all in English, with no accommodation for other languages during service. If your English is strong enough to pass the ASVAB, which is only offered in English, that’s generally treated as sufficient proof of fluency.

Jobs and Ranks Non-Citizens Cannot Hold

Enlisting as a non-citizen gets you in, but not everywhere. Two restrictions shape your options: officer status and security clearances.

Officer and Warrant Officer Positions

Federal law requires U.S. citizenship for an original appointment as a commissioned officer. There is a narrow exception: the Secretary of Defense can waive the requirement for a lawful permanent resident when national security demands it, but only for a commission below the rank of major (Army, Air Force, Marines) or lieutenant commander (Navy, Coast Guard).⁶ Those waivers are rare. Warrant officer programs require citizenship with no waivers available.⁷ Most non-citizen service members serve in enlisted ranks until they naturalize.

Security Clearances

Only U.S. citizens qualify for a standard personnel security clearance, according to the Defense Counterintelligence and Security Agency.⁸ In limited situations, a non-citizen may receive a Limited Access Authorization at the Secret level, but it isn’t a true clearance and doesn’t open the same jobs.

The practical impact matters. Intelligence analysis, nuclear operations, cryptography, and most communications specialties require at least a Secret clearance. Recruiters will steer you toward specialties that don’t involve classified information. Once you become a citizen and obtain a clearance, you can reclassify into those restricted fields.

Documents You’ll Need

Bring these to a recruiting office:

Your Permanent Resident Card (Form I-551), current, with at least six months of validity remaining.³
An original Social Security card without employment restrictions.
Your valid foreign passport, used as a second form of identity verification.
Education credentials. If you attended school outside the United States, you’ll need a professional credential evaluation showing your education is equivalent to a U.S. high school diploma. Ask your recruiter which evaluation services the branch accepts before paying for one.⁹

If your diploma or birth certificate is in a language other than English, you’ll also need a certified translation, typically $20 to $40 per document. Any mismatch in names or dates across your Green Card, passport, and enlistment paperwork can stall the process until recruiting command sorts out which version is correct.

Register for Selective Service First

This is where male non-citizen applicants get caught out. Almost all male immigrants between 18 and 25 who live in the United States must register with the Selective Service System within 30 days of their 18th birthday, or within 30 days of arriving in the country, whichever comes later.¹⁰ That covers lawful permanent residents, refugees, asylum seekers, and undocumented immigrants. The only males exempt are those on current, unexpired nonimmigrant visas.

Failing to register before you turn 26 has long consequences. If you later apply for citizenship through military service, USCIS treats the failure as evidence against your good moral character, and your naturalization eligibility can be delayed by up to five years, potentially pushing it to age 31.¹¹ Verify your registration status before you start the enlistment process.

Faster Citizenship Through Military Service

Military service is one of the fastest routes to U.S. citizenship available to any immigrant. Two sections of the Immigration and Nationality Act create the path, and which one applies depends on whether the country is in a designated period of hostilities.

One Year of Service (INA Section 328)

Under Section 328, a service member with at least one year of honorable military service can apply for naturalization with significant advantages over civilian applicants. You’re exempt from the standard requirements to have lived in the United States for a certain number of years or in a particular state for a certain period, as long as you file while still serving or within six months of separation.¹² You still need to demonstrate good moral character and pass the civics and English tests.

Service During Hostilities (INA Section 329)

When the President designates a period of military hostilities by executive order, Section 329 removes more barriers still. President George W. Bush issued Executive Order 13269 on July 3, 2002, designating the War on Terrorism as such a period, retroactive to September 11, 2001. That designation remains active.⁴

Under Section 329, there is no minimum service period, so a service member can apply without having served a full year. The statute also waives the lawful permanent resident requirement, as long as the person was physically present in the United States at the time of enlistment.¹³ Residence and physical presence requirements drop away as well. Some recruits have naturalized during initial training.

How to Apply

Under either section, you file Form N-400 (Application for Naturalization) along with Form N-426 (Request for Certification of Military or Naval Service). Your chain of command must certify the N-426 to confirm your service has been honorable. If you’ve already separated, submit a copy of your DD Form 214 or equivalent discharge document in place of the N-426.¹⁴ Filing early in your career makes sense while the hostilities designation is still active.

Discharge Type Controls Eligibility

Your path to citizenship depends on leaving under honorable conditions. Honorable or general (under honorable conditions) discharges keep your eligibility intact. An other-than-honorable discharge blocks your application.

Watch this recent change. Entry-level separations, issued to service members who leave during their first 180 days, previously received an “uncharacterized” discharge that USCIS treated as meeting the honorable-conditions requirement. On August 1, 2024, the Department of Defense amended its policy, and uncharacterized discharges issued on or after that date no longer satisfy the honorable-service requirement for naturalization.¹⁵ If you receive an unfavorable discharge, you can petition the Department of Defense to change its characterization.

Immigration Help for Family Members

Serving can also help relatives who lack legal status. Through Parole in Place, USCIS may grant temporary legal presence to certain family members of service members on a case-by-case basis. Eligible relatives include the spouse, widow or widower, parent, son, or daughter of an active-duty service member, a member of the Selected Reserve, or a veteran who was not dishonorably discharged.¹⁶

Parole in Place applies only to family members present in the United States without a formal admission. Relatives who were admitted lawfully but overstayed don’t qualify for parole, but may be eligible for deferred action instead. Applications are filed using Form I-131 with evidence of the family relationship and the service member’s military status, and parole is granted in one-year increments.¹⁶ It isn’t guaranteed, but it’s one more reason military service carries immigration weight beyond your own naturalization.

1
Office of the Law Revision Counsel. 10 USC 504 – Persons Not Qualified
2
USAGov. Requirements to Join the U.S. Military
3
U.S. Army. Eligibility and Requirements to Join
4
U.S. Citizenship and Immigration Services. Chapter 3 – Military Service During Hostilities (INA 329)
5
U.S. Army Recruiting Command. U.S. Army Provides Pathway for Foreign Language Speaking Applicants
6
Office of the Law Revision Counsel. 10 USC 532 – Qualifications for Original Appointment as a Commissioned Officer
7
U.S. Army Recruiting Command. Steps to Determine Eligibility for the Warrant Officer Program
8
Defense Counterintelligence and Security Agency. Security Assurances for Personnel and Facilities
9
U.S. Department of Education. Recognition of Foreign Qualifications
10
Selective Service System. Who Needs to Register
11
Selective Service System. Speakers Bureau Booklet – Fast Facts
12
eCFR. Part 328 – Special Classes of Persons Who May Be Naturalized: Persons With 1 Year of Service in the United States Armed Forces
13
Office of the Law Revision Counsel. 8 USC 1440 – Naturalization Through Active-Duty Service in the Armed Forces
14
U.S. Citizenship and Immigration Services. Naturalization Through Military Service
15
U.S. Citizenship and Immigration Services. USCIS Updates Guidance on Military Naturalization
16
U.S. Citizenship and Immigration Services. Discretionary Options for Military Members, Enlistees and Their Families