N-400 Military: Naturalization for Service Members & Veterans

If you're serving in the U.S. military—or you've already completed your service—you have access to one of the fastest, most straightforward paths to U.S. citizenship available. The N-400 military track isn't just a benefit; it's a recognition of the sacrifice service members make. Under Section 328 and Section 329 of the Immigration and Nationality Act (INA), qualifying military personnel can skip several standard requirements that civilian applicants must meet.

That said, the process still has real steps, real deadlines, and real paperwork. Understanding how the N-400 military route works—who qualifies, what gets waived, and what doesn't—can save you months of confusion and potentially prevent costly mistakes.

This guide walks through everything: eligibility rules for active duty and veterans, how overseas applications work, fee exemptions, and what to expect during the naturalization interview for military applicants.

Two Legal Pathways: Section 328 vs. Section 329

Military naturalization splits into two main pathways depending on when and how you served.

Section 328 applies to service members who served honorably in the U.S. armed forces for one or more years at any time—not necessarily during a designated wartime period. You can be currently serving or a veteran. The key requirements are:

• At least one year of honorable service in the Army, Navy, Marine Corps, Air Force, Space Force, or Coast Guard
• You filed the N-400 while still in service or within six months of an honorable discharge
• You must be a lawful permanent resident (LPR) at the time of filing

Section 329 is the wartime provision. If you served honorably during a designated period of hostilities—such as the period beginning September 11, 2001, which is still active—you may naturalize with no minimum service period and no LPR requirement. That means you could potentially naturalize without ever having had a green card, which is a significant distinction.

Both pathways waive the standard five-year (or three-year for spouses of U.S. citizens) continuous residence requirement. That's one of the biggest advantages of the military route.

Who Qualifies for Military Naturalization?

Eligibility depends on your specific situation, but here's a breakdown of the most common scenarios.

Active duty service members serving during a designated period of hostilities can file under Section 329 on day one—there's no minimum service length. Those serving outside a designated hostility period need at least one year of service before filing under Section 328.

Veterans who were honorably discharged can file under Section 328 if they do so within six months of discharge. After six months, you're no longer eligible for the special military track and must meet standard residency requirements instead. Don't miss that window.

Non-LPR service members filing under Section 329 are a special case. USCIS coordinates with the Department of Defense (DoD) to process these applications. Because the applicant doesn't hold a green card, USCIS must first verify lawful admission or parole, then proceed with naturalization in a combined process.

One thing to watch: dishonorable discharge disqualifies you from both pathways. If your discharge was under conditions other than honorable, consult an immigration attorney before filing—some upgrade requests have been successful, and your eligibility may depend on the specific characterization.

The N-400 Filing Fee: What Military Applicants Pay

Here's one of the clearest benefits: military applicants generally pay no filing fee.

Under Section 328 and Section 329, USCIS waives the N-400 filing fee entirely for qualifying service members and veterans. As of 2025, the standard N-400 filing fee is $760 (including biometrics). That's a meaningful saving—and it applies whether you're filing on active duty or as a veteran within the eligibility window.

To claim the fee waiver, you'll need to provide supporting military documentation with your application. USCIS won't automatically waive the fee without evidence of qualifying service. The required documents are covered in the next section.

One caveat: if you file after the six-month post-discharge window under Section 328 and you no longer meet the special military eligibility criteria, you'd revert to the standard fee structure. Another reason not to delay.

Required Documents for Military N-400 Applications

Documentation requirements for military applicants differ somewhat from the civilian checklist. Here's what you'll typically need:

• Form N-400 — completed and signed
• DD-214 (Certificate of Release or Discharge) — for veterans; shows service period, discharge type, and character of service
• Form N-426 (Request for Certification of Military or Naval Service) — must be certified by your commanding officer or personnel officer; certifies honorable service
• Proof of lawful permanent residence (green card copy, front and back) — for Section 328 applicants
• Two passport-style photos
• Any court records for arrests or convictions, if applicable

For active duty applicants, the N-426 must be signed before submission. Getting this certified can sometimes take time depending on your unit's administrative workload—don't wait until the last minute, especially if you're filing close to a discharge date.

If you're filing overseas (more on that below), your commanding officer may need to take additional steps to submit the package through military postal channels or directly to a USCIS overseas office.

Filing Overseas: How It Works

One of the most common questions from military members stationed abroad is whether they can file the N-400 from outside the United States. The answer is yes—and it's specifically designed that way.

USCIS operates overseas offices at certain U.S. military installations, including locations in Germany (Grafenwoehr), South Korea (Camp Humphreys), and Japan (Yokota Air Base). These offices conduct naturalization ceremonies at military installations, allowing service members to become citizens without returning to the U.S.

If no USCIS overseas office covers your location, your application can be forwarded to the nearest office. The process typically involves:

1. Completing the N-400 and getting the N-426 certified by your commanding officer
2. Submitting the application through your installation's legal assistance office or military personnel office
3. USCIS scheduling a biometrics appointment and interview, often conducted at the nearest available facility
4. Attending a naturalization ceremony, which may be at the installation or at a USCIS office upon return to the U.S.

Processing times for overseas applications can vary significantly—from a few weeks on installations with active USCIS offices to several months in remote locations. Communicate proactively with your legal assistance office to track your application's status.

The Military Naturalization Interview

The N-400 interview process for military applicants follows the same general structure as civilian interviews, but there are a few differences worth knowing.

You'll meet with a USCIS officer who reviews your application, verifies your documents, and tests your English proficiency and civics knowledge. The English test involves demonstrating you can read, write, and speak basic English. The civics test covers U.S. history and government—you're asked up to 10 questions from a list of 100, and you need to answer 6 correctly.

Military applicants are not exempt from the English and civics tests under standard Section 328 and 329 filings. However, there are separate age and residency-based exemptions that may apply—for example, applicants who are 50 years old and have been LPRs for 20 years are exempt from the English test. Certain medical disabilities can also qualify you for a waiver via Form N-648.

One practical tip: bring your original military documents to the interview, even if you've already submitted copies. USCIS officers often want to verify originals, and arriving without them can delay your case.

After a successful interview, you'll attend a naturalization ceremony and take the Oath of Allegiance. For service members on active duty, this ceremony can often be scheduled at your installation.

Posthumous Citizenship for Fallen Service Members

This is a provision that doesn't get discussed enough. Under Section 329A of the INA, a non-citizen who dies as a result of active duty service during a designated period of hostilities may be granted posthumous U.S. citizenship. The application (Form N-644) must be filed by an eligible family member within two years of the service member's death.

Posthumous citizenship doesn't confer immigration benefits on family members, but it's a formal recognition of service and sacrifice—and it matters enormously to families. If you know of a family in this situation, it's worth flagging this provision to them.

Common Mistakes That Delay or Derail Military N-400 Applications

Even with a streamlined process, applications get stuck. Here are the most frequent issues:

• Uncertified N-426 — submitting this form without a commanding officer's signature is one of the top reasons for rejection or delays. Get it signed before you mail anything.
• Missing DD-214 — veterans sometimes assume USCIS can pull their service record directly. They can't. You must provide the DD-214.
• Filing after the six-month window — once you cross that deadline post-discharge, your military eligibility is gone. Set a reminder well in advance.
• Incorrect discharge characterization — if your DD-214 lists anything other than Honorable or General Under Honorable Conditions, consult a lawyer before filing.
• Forgetting to update the application for address changes — USCIS sends correspondence by mail; if you PCS between filing and interview, update your address immediately via your USCIS online account or by contacting the office handling your case.

Resources and Next Steps

If you're ready to start your application, USCIS provides a dedicated military naturalization page with the latest instructions, form versions, and office locators. The N-400 practice tests on this site can help you prepare for the civics portion of your interview—the same 100 questions apply regardless of whether you're a civilian or military applicant.

Veterans and active duty members can also access free legal assistance through their installation's Judge Advocate General (JAG) office. JAG attorneys can review your application before submission, help you gather military documentation, and advise on any complications with discharge status or prior criminal history.

For service members overseas, the legal assistance office at your installation is your first point of contact. They're familiar with the USCIS overseas process and can help coordinate the N-426 certification and application routing.

The path to citizenship through military service is one of the most direct available under U.S. immigration law. With the right documentation and an understanding of which pathway applies to your situation, the process is straightforward—and the result is permanent.