Have you ever served in a foreign military?

When the USCIS officer asks whether the applicant has ever served in a foreign military, the applicant should respond truthfully and disclose any service in any country's armed forces, paramilitary units, militias, intelligence services, or armed insurgent groups, regardless of whether the service was voluntary or compulsory. The N-400 application Part 12 asks specifically about military service in any military, militia, paramilitary unit, rebel group, or guerrilla group.

Officers ask about foreign military service for several distinct reasons. First, foreign military service may bear on security and good moral character review. Second, certain types of foreign military service are bars to naturalization. Third, the question helps build a complete biographical picture.

Most foreign military service does not bar naturalization. Many countries have compulsory military service, and applicants from those countries (South Korea, Israel, Singapore, Switzerland, Austria, Greece, Finland, Norway, several Latin American countries, etc.) routinely served before immigrating to the United States. The applicant should disclose service, give the country, branch, dates, rank, and type of duty (compulsory conscription, professional officer, reservist, etc.), and confirm whether the service ended through honorable discharge, end of conscription term, desertion, or other means.

Service in the armed forces of a country that was at war with the United States during specific periods may face additional scrutiny. Service in the armed forces of countries that committed war crimes or crimes against humanity, or that the applicant participated in such crimes, raises grave concerns. The Immigration and Nationality Act excludes from naturalization those who participated in: Nazi persecution; genocide under section 212(a)(3); torture or extrajudicial killing; severe violations of religious freedom; recruitment or use of child soldiers; and similar atrocities.

Members of foreign forces that were classified as terrorist organizations face the section 212(a)(3) bar. Applicants who served in compulsory armed forces of communist or totalitarian states should disclose this and explain the involuntary nature; many such applicants qualify for exceptions to the section 313 bars. Members of paramilitary forces, militias, or armed insurgent groups should disclose service, with the analysis depending on the nature of the group and the applicant's role.

Applicants with concerns about how their foreign military service affects naturalization should consult an immigration attorney before filing. Documentation of military service (discharge papers, service records, medals, or other documentation if available) supports honest disclosure. Honesty paired with documentation and explanation of context is the safest approach.