N-426, Request for Certification of Military or Naval Service

Applicants for naturalization use this form to request that the Department of Defense verify their military or naval service.

What This Form Can Help You Do

Forms and Document Downloads

Form Details

Edition Date

03/01/21. We will also accept the 09/16/19 edition. You can find the edition date at the bottom of the page on the form and instructions.

Dates are listed in mm/dd/yy format.

Where to File

Return the form to the office that requested the certification.

Don’t forget to sign your form! We will reject any unsigned form.

Special Instructions

Please read the instructions carefully and review the Supplemental provided here (PDF, 141.63 KB) to help you complete the form. If relevant, please see our M-599, Naturalization Information for Military Personnel (PDF, 251.97 KB) brochure.

If you are claiming eligibility for naturalization based on your service in the U.S. armed forces, you must submit a signed and certified Form N-426 with your Form N-400, Application for Naturalization. Only military personnel serving in pay grade O-6 or above and equivalent civilian personnel (GS-15 or above) with proper authorization may certify your Form N-426. 

If you previously served in the U.S. armed forces, you must submit a copy of your DD Form 214, Certificate of Release or Discharge from Active Duty; NGB Form 22, National Guard Report of Separation and Record of Service; or an equivalent discharge document for any periods of service you have completed. You may submit an uncertified Form N-426 as long as your DD-214, NGB-22, or equivalent document covers all applicable periods of service and lists the type of separation and character of service.

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