Yes. An individual who served honorably during their lifetime and who lost their life due to an injury incurred as a result of their service, may be eligible for naturalization. The spouse and children of a deceased U.S. citizen service member may also be eligible for naturalization. To apply for posthumous citizenship, the next of kin must submit Form N-644 (officially called the “Application for Posthumous Citizenship”) during the 2-year period following the death of the service member.