Last Updated: October 28, 2026
Quick Summary
Naturalization requirements for military service members depend on whether you served under INA Section 328 (peacetime) or Section 329 (designated hostilities). Section 328 requires one year of honorable service and a green card, while Section 329 requires only one day of honorable service and no green card at filing.
- Section 328 peacetime applicants must file while serving or within six months of separation.
- Section 329 applies only during periods the President has designated by executive order as hostilities.
- Eligible service members pay no application fee under either Section 328 or Section 329.
- Form N-426 must be certified by your branch before USCIS will process the N-400.
- A dishonorable discharge ends the naturalization process, though a general discharge under honorable conditions may still qualify.
Table of Contents
- Military Naturalization Eligibility: Who Qualifies Under INA Sections 328 and 329
- Green Card, Service Length, and Honorable Discharge Requirements
- Edge Cases: Reservists, Separated Members, and Non-Honorable Discharges
- Form N-426 Certification of Military or Naval Service
- Form N-400 Military Naturalization: Filing, Fees, and Where to Submit
- Military Naturalization Documents: A Complete Checklist
- Get Your Service Records Reviewed Before You File
- Frequently Asked Questions
Military Naturalization Eligibility: Who Qualifies Under INA Sections 328 and 329
Naturalization requirements for military service members differ sharply from the rules that apply to everyone else. Two pathways exist under the Immigration and Nationality Act, and which one fits you depends on whether your service falls under INA Section 328 (peacetime) or INA Section 329 (designated period of hostilities).
Peacetime Service Under INA Section 328
Section 328 covers service members who served during peacetime. The core rules are straightforward. You need at least one year of honorable service, you must be a lawful permanent resident, and you must be at least 18. The Congressional Research Service summary of military naturalization confirms these section 328 basics.
The one-year minimum can be met through any combination of active duty and honorable service, but the service must be continuous and characterized as honorable. Two timing details matter more than most applicants realize:
- You must be a lawful permanent resident at the time you file. Section 328 does not waive the green card requirement, so peacetime applicants generally cannot naturalize before their permanent resident status is in place.
- You must file while still serving or within six months of separation. The statute allows a peacetime service member to apply during service or within six months after honorable separation. Filing later than that window pushes you into the standard five-year naturalization track.
A common pattern is for reservists and National Guard members to assume their drill time automatically counts. It can, but only when the service is characterized as honorable and meets the statutory service requirements. Confirm the characterization on your discharge or statement of service before you rely on it.
Wartime Service Under INA Section 329
Section 329 applies during a designated period of hostilities. The service minimum drops to one day of honorable service, and you can file on the day you enlist. You do not need to be a green card holder at the time of service. This is the faster route when it applies.
The trade-off is that Section 329 is narrower than it looks. It applies only when your service occurred during a period the President has designated by executive order as a period of hostilities. Service outside a designated window falls back to Section 328 or the standard track. The USCIS military naturalization guidance explains both pathways and confirms eligible applicants pay no application fee under either section.
If your service spans both a designated hostilities period and peacetime, do not assume you can pick the easier pathway. Eligibility depends on the applicable statutory provision and the facts of your service. A records review before filing is the safest way to confirm which section controls.
How the Two Pathways Compare
| Requirement | Section 328 (Peacetime) | Section 329 (Hostilities) |
|---|---|---|
| Minimum service | One year | One day |
| Green card needed at filing | Yes | No |
| Age | 18 or older | 18 or older |
| Discharge type | Honorable | Honorable |
| Filing window | During service or within six months of separation | During service or within six months of separation |
| Application fee | None | None |
The table captures the headline differences, but the practical question is which provision applies to your record. A service member who enlisted during a designated hostilities period and separated after it ended may satisfy Section 329 based on the qualifying service, while a member whose entire career fell outside any designated period is measured under Section 328. Because the consequences differ, most importantly on the green card requirement, this is the single most important eligibility question to resolve before you prepare Form N-400.
What Counts as Qualifying Service
Both pathways require honorable service, and both look at the characterization on your discharge or statement of service rather than the label on your orders. Active duty, reserve drill, and National Guard service can all qualify when the characterization is honorable and the statutory service minimum is met. A general discharge under honorable conditions may still qualify, but a dishonorable discharge ends the process. The next section breaks down the discharge and service-length rules in more detail.
Green Card, Service Length, and Honorable Discharge Requirements
Honorable service is the thread that ties both pathways together. A general discharge under honorable conditions may still qualify, but a dishonorable discharge ends the process. Here is how the main requirements stack up:
| Requirement | Section 328 (Peacetime) | Section 329 (Hostilities) |
|---|---|---|
| Minimum service | One year | One day |
| Green card needed | Yes | No |
| Age | 18 or older | 18 or older |
| Discharge type | Honorable | Honorable |
| Application fee | None | None |
Edge Cases: Reservists, Separated Members, and Non-Honorable Discharges
Reservists and National Guard members can qualify, but the service must be characterized as honorable. Separated members face a harder question: if you left service before naturalization, your discharge characterization controls. A less-than-honorable discharge does not automatically bar you, but it triggers a closer review of good moral character. Criminal charges can also affect eligibility, and the CRS report on military naturalization options notes that moral character remains part of the test. If a service member dies during qualifying service, surviving family members should speak with an attorney about posthumous options.
Form N-426 Certification of Military or Naval Service
Form N-426 is the certification of military or naval service. Your branch must certify your service record before USCIS will process the N-400. Request it through your chain of command or the relevant service headquarters. Watch out: an uncertified or incomplete N-426 is one of the most common reasons a military N-400 stalls.
Form N-400 Military Naturalization: Filing, Fees, and Where to Submit
Form N-400 military naturalization filings go to USCIS, and eligible service members pay no application fee under either Section 328 or Section 329. The fee treatment is one of the few places where military applicants get a clear break, but the filing sequence has military-specific steps that civilian applicants never see. Here is the practical order of operations.
Step 1: Confirm Eligibility and the Controlling Section
Before you touch Form N-400, confirm whether Section 328 or Section 329 applies to your service and whether you meet the service minimum, the age requirement, and the status rule for that section. This is also the point to check your discharge characterization and, for Section 328 applicants, your lawful permanent resident status.
Step 2: Obtain Form N-426 Certification
Form N-426, Request for Certification of Military or Naval Service, must be certified by your branch before USCIS will process the N-400. Request it through your chain of command or the relevant service headquarters. An uncertified or incomplete N-426 is one of the most common reasons a military N-400 stalls, so build in time for the branch to return it.
Step 3: Complete and Submit Form N-400
File the Application for Naturalization online or by mail, following the current USCIS Form N-400 instructions for the filing address and edition date. Submit the certified N-426 and your supporting documents with the application. Because the application fee is waived for eligible military applicants under both sections, confirm the current fee treatment on the USCIS instructions page before you pay anything.
Do not mail a payment with a military N-400 unless the current instructions tell you to. Submitting the wrong fee can delay processing while USCIS sorts out the payment.
Step 4: Biometrics, Interview, and Oath
After USCIS accepts the packet, you attend a biometrics appointment, sit for the naturalization interview, and take the oath of allegiance. The English-language requirement and civics test usually apply, though wartime applicants may see adjustments. Bring your certified N-426, service records, and discharge paperwork to the interview.
Where to Submit and What to Expect
Military N-400 filings go to USCIS, not to your branch or to a military office. Filing costs and processing timelines are separate questions: the application fee is waived for eligible applicants, but processing time still depends on USCIS workload and the completeness of your packet. Check the current USCIS processing-time tool for your filing location rather than relying on a general estimate.
For the full filing walkthrough, see our guide on how to file for naturalization. If cost is a concern for family members filing outside the military pathways, our article on requesting a fee waiver explains the process.
Military Naturalization Documents: A Complete Checklist
Build your packet before you file. Missing documents cause delays that can stretch for months.
- Form N-400, completed and signed
- Form N-426, certified by your branch
- Proof of green card status, if filing under section 328
- Service records and DD-214 or statement of service
- Proof of honorable discharge
- Two passport-style photos
- Government-issued ID
- Evidence of good moral character
Get Your Service Records Reviewed Before You File
A records review catches problems before USCIS does. We explain your options clearly. You can review our naturalization and citizenship services or compare attorney representation with DIY filing before you decide. If criminal charges are part of your history, read our guidance on how criminal charges affect naturalization eligibility.
Frequently Asked Questions
What are the naturalization requirements for military service members?
The core requirements depend on which pathway applies. Under INA Section 328 (peacetime), you generally need at least one year of honorable service, lawful permanent resident status, good moral character, and you must be at least 18. Under INA Section 329 (designated period of hostilities), the one-year service minimum drops to one day of honorable service during the designated period. Both pathways still require Form N-400, a military certification, and passing the English and civics requirements unless an exception applies.
How much does it cost to become a naturalized citizen through military service?
Eligible service members and veterans filing under INA Sections 328 and 329 do not pay the Form N-400 application fee, and the biometrics fee is also waived for qualifying military applicants. That removes the largest cost of the civilian process. Other costs, such as legal representation, document retrieval, or travel to an interview, are separate and depend on your situation. Confirm current fee treatment on the USCIS military naturalization page before you file.
Can a service member apply for naturalization while stationed overseas?
Yes. Military naturalization does not require you to be physically present in the United States when you file, and USCIS conducts naturalization interviews and oath ceremonies for service members stationed abroad. You still file Form N-400, submit a certified Form N-426, and complete biometrics and interview steps, which may be scheduled at a USCIS office overseas or through military channels. Talk to your unit’s legal office early, because deployment schedules can affect interview timing.
What happens to a pending naturalization application if the service member is separated or discharged before it is approved?
USCIS can deny a military naturalization application if you separate from service before the case is decided and you no longer meet the eligibility basis you filed under. If your discharge is not honorable, the military pathway generally closes and you may need to qualify under standard naturalization rules, which carry continuous residence and physical presence requirements. Report any change in service status to USCIS promptly, and get advice before you withdraw or refile.
Filing for military naturalization rewards preparation. One missing certification or an unclear discharge record can turn a straightforward case into a long delay. Kanu & Associates, P.C. offers a specialized focus on immigration, clear explanations of your options, and support for clients in both Arizona and New Mexico. Get started with Kanu & Associates, P.C. and file with confidence.
