Form N-426 | Request for Certification of Military or Naval Service

Form N-426 | Request for Certification of Military or Naval Service

Purpose of Form

If you are a member of naval or military service in the United States and you want to get the citizenship of our country, you need to refer to the Department of Defense. This Department will verify your status of a military member.

Special instructions

In order to verify the fact that you are serving in the US Armed Forces, you need to fill USCIS Form N-426 (Request for Certification of Military or Naval Service) if a USCIS office request it. In this instance, fill this form and send it the office which requests it. You may be also forced to attach Form N-400 and Form G-325B if you applying according to Section 328/329 of the Immigration and Nationality Act. 

Common filing mistakes

  • Using an outdated USCIS edition of the form.
  • Leaving required fields blank or mixing typed and handwritten answers inconsistently.
  • Forgetting the signature, supporting evidence, or the correct filing fee.

Official USCIS Update

USCIS can change filing addresses, fees, and accepted editions without notice. Use the official links below before filing.

Current edition: 03/13/26

Verified: 2026-05-21

Filing fee: You can find the filing fee for Form N-426 by visiting our Fee Schedule page.

Where to file: Form N-426 should be filed or uploaded with the electronic Form N-400, Application for Naturalization , or if submitting by paper, using the Direct Filing Addresses for Form N-400, Application for Naturalization .

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See also

Download N-426 FormRead more
Form I-907 | Request for Premium Processing ServiceRead more

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