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.
Form Details
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Form N-426 should be filed or uploaded with the electronic Form N-400 or, if submitting by paper, using the direct filing address for the Form N-400.
If you received a Request for Evidence asking you to submit a Form N-426, return the Form N-426 to the office that requested the certification.
You can find the filing fee for Form N-426 by visiting our Fee Schedule page.
Filing Tips: Review our Tips for Filing Forms by Mail page for information on how to ensure we will accept your form.
Don’t forget to sign your form. We will reject any unsigned form.
Please read the instructions carefully. If relevant, please see our M-599, Naturalization Information for Military Personnel (PDF, 421.7 KB) brochure.
If you are claiming eligibility for naturalization based on your service in the U.S. armed forces and you are currently serving, you must submit a signed and certified Form N-426 with your Form N-400, Application for Naturalization. Only authorized military personnel may certify your Form N-426. Please review your branch’s policy regarding who is authorized to certify.
If you previously served in the U.S. armed forces, do not submit Form N-426. Instead, 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 all periods of service.