Can You Become a US Citizen by Joining the Military?

Non-citizens can become U.S. citizens through military service, and the process is faster and cheaper than the civilian route. Federal law creates two pathways to becoming a U.S. citizen through military service: one for at least a year of peacetime service by a lawful permanent resident, and a broader one for service during a designated period of hostilities that waives both the time requirement and the green card requirement. Both paths cost nothing to file, and both can eliminate the standard five-year wait for naturalization.

Getting Into the Military as a Non-Citizen

Before naturalization is on the table, you have to enlist. Enlisted positions require a valid Permanent Resident Card and a Social Security number. Commissioned officer positions are restricted to U.S. citizens, so the enlisted ranks are the entry point.

The Military Accessions Vital to the National Interest (MAVNI) program once allowed certain non-citizens without green cards to enlist if they had critical medical or language skills. It has not accepted new applications since fiscal year 2017, and as of early 2026 the Department of Defense has not reopened it. A green card is effectively the only way in.

Peacetime Service: The One-Year Path Under INA 328

Section 328 of the Immigration and Nationality Act covers naturalization based on at least one year of honorable military service, whether that year runs continuously or is spread across multiple enlistments.¹ You must be a lawful permanent resident at the time of your naturalization interview.

File while you are still serving or within six months of an honorable discharge and you skip the standard five-year continuous residence requirement and the 30-month physical presence requirement.² The six-month window is decisive. Miss it, and those residence and physical presence requirements snap back into place; any honorable service within the prior five years counts toward them but no longer eliminates them.³

No state or district residence requirement applies. No filing fee either.²

Wartime Service: The Faster Path Under INA 329

Section 329 opens a broader route for anyone who serves during a period the President has designated as involving armed conflict with a hostile force. The current designation, established by Executive Order 13269, covers the period beginning September 11, 2001, with no end date set.⁴

This pathway removes the two biggest barriers the peacetime track keeps. There is no minimum service duration, and you do not need to be a lawful permanent resident. You qualify if you were physically present in the United States, American Samoa, Swains Island, or aboard a U.S. government vessel at the time of enlistment, or if you were at some point lawfully admitted for permanent residence.⁴ No period of U.S. residence or physical presence is required at all.

National Guard and Reserve members qualify under Section 329 if they served in the Selected Reserve of the Ready Reserve during a designated period of hostility. A Guard member does not need to show federal activation, only Selected Reserve status during the qualifying period.⁵

The Five-Year Catch

Section 329 has a string attached that the peacetime path does not. If you naturalize under 329 and are later separated under other-than-honorable conditions before completing five years of total honorable service, USCIS can revoke your citizenship.⁴ That is on top of general grounds for revocation that apply to any naturalized citizen.

How Your Discharge Characterization Decides Eligibility

The character of your discharge is the single most important factor. Both pathways require that your service be designated as honorable by the branch in which you served.¹

Honorable discharge fully qualifies under both INA 328 and 329.
A general discharge under honorable conditions meets the statutory “separated under honorable conditions” standard.⁶
An uncharacterized discharge issued before August 1, 2024 is treated as meeting the honorable conditions requirement.
An uncharacterized discharge issued on or after August 1, 2024 no longer qualifies. A Department of Defense policy change removed the provision that previously treated uncharacterized separations as the equivalent of honorable for administrative purposes.⁷
Other-than-honorable, bad conduct, and dishonorable discharges permanently bar naturalization through military service.

An unfavorable discharge is not always the end of the road. You can request an upgrade through your branch’s Board for Correction of Military Records, including for discharges tied to COVID vaccination requirements. A successful upgrade can restore eligibility.⁷

Filing the Application

Two forms carry the case: Form N-400 (Application for Naturalization) and Form N-426 (Request for Certification of Military or Naval Service). The N-426 must be signed by an authorized military official who certifies your dates of service, discharge characterization, and whether the service was honorable.⁶

If you are still serving, the certified N-426 is your primary proof of military status. If you have separated, submit a copy of your DD Form 214 (Certificate of Release or Discharge from Active Duty), or NGB Form 22 for National Guard members.⁶ Lawful permanent residents should include copies of both sides of their green card.

Beyond military documents, the N-400 asks for a full history of residences, employment, and any criminal or legal issues. Match dates of service on the N-426 or DD-214 to your official personnel file exactly. Mismatches between military and immigration records are one of the most common causes of delay.

No Filing Fee

Military applicants pay nothing. The statute bars any fee for filing the N-400 or issuing the naturalization certificate,² and the USCIS fee schedule confirms a $0 fee for applicants qualifying under INA 328 or 329.⁸

Interview, Tests, and Oath

After USCIS processes your application, you sit for an in-person interview with an immigration officer who reviews your background, service record, and application. The interview includes an English language test and a U.S. civics test on American history and government. The military does not exempt anyone from either test.

USCIS accommodates deployed service members by holding naturalization ceremonies overseas. Members stationed abroad can work with USCIS international offices to complete the entire process without returning stateside. After the Oath of Allegiance and the Certificate of Naturalization, you have full citizenship rights.

Benefits for Military Spouses and Children

Spouses Stationed Abroad

Military spouses who are lawful permanent residents often lose ground on residency requirements because orders send them overseas. Section 319(e) of the INA lets qualifying time abroad with a service-member spouse count as both continuous residence and physical presence in the United States, and these spouses can complete the entire process from abroad.⁹ The spouse still must independently meet every other requirement, including good moral character and the English and civics tests.

Surviving Spouses

If a service member dies during honorable active-duty service, the surviving spouse can naturalize under Section 319(d). That provision waives the three-year continuous residence and 18-month physical presence requirements that normally apply to spouses of U.S. citizens. The surviving spouse must be a lawful permanent resident at the time of the interview, but faces no time-based presence hurdles.¹⁰ Eligibility survives remarriage.

Children Abroad

Section 322 lets a U.S. citizen parent apply for citizenship on behalf of a child under 18 who was born abroad. Normally the child must be temporarily present in the United States for the interview, but children of service members stationed overseas are exempt from that physical presence requirement as long as the child is authorized to accompany and reside with the service member under official orders.¹¹ Both parent and child must still appear before a USCIS officer, which can be coordinated with leave or a permanent change of station.

Posthumous Citizenship

When a non-citizen service member dies as a result of injury or disease connected to active-duty service during a designated period of hostilities, the next of kin can request posthumous citizenship under Section 329A. The request must be filed within two years of the service member’s death.¹²

Posthumous citizenship is honorary. It does not grant the surviving spouse, children, or any other relative immigration status or eligibility for benefits under the INA.¹³ Families who need immigration relief should look at the separate surviving spouse provisions under Section 319(d) or other available channels.

1
eCFR. 8 CFR Part 328 – Special Classes of Persons Who May Be Naturalized: Persons with 1 Year of Service in the United States Armed Forces
2
Office of the Law Revision Counsel. 8 USC 1439 – Naturalization Through Service in the Armed Forces
3
U.S. Citizenship and Immigration Services. USCIS Policy Manual Volume 12, Part I, Chapter 2 – One Year of Military Service During Peacetime (INA 328)
4
Office of the Law Revision Counsel. 8 USC 1440 – Naturalization Through Active-Duty Service in the Armed Forces During Periods of Military Hostilities
5
U.S. Citizenship and Immigration Services. USCIS Policy Manual Volume 12, Part I, Chapter 3 – Military Service During Hostilities (INA 329)
6
U.S. Citizenship and Immigration Services. Naturalization Through Military Service
7
U.S. Citizenship and Immigration Services. USCIS Updates Guidance on Military Naturalization
8
U.S. Citizenship and Immigration Services. G-1055 Fee Schedule
9
U.S. Citizenship and Immigration Services. USCIS Policy Manual Volume 12, Part I, Chapter 9 – Spouses, Children, and Surviving Family Benefits
10
eCFR. 8 CFR Part 319 – Special Classes of Persons Who May Be Naturalized: Spouses of United States Citizens
11
eCFR. 8 CFR Part 322 – Child Born Outside the United States: Requirements for Application for Certificate of Citizenship
12
Office of the Law Revision Counsel. 8 USC 1440-1 – Posthumous Citizenship Through Death While on Active-Duty Service in Armed Forces During Periods of Military Hostilities
13
eCFR. 8 CFR Part 392 – Special Classes of Persons Who May Be Naturalized: Persons Who Die While Serving on Active Duty with the United States Armed Forces During Certain Periods of Hostilities