How do I know if I'm eligible for citizenship if I'm in the military? There are several different paths to U.S. citizenship based on military service. Check out this table for a more detailed explanation. Related articles Can I take copies of documents to my green card interview or do they need to be original? How long does it take for my naturalization application to be processed? What is an RFE? Do I give Boundless the government fees? What if I don’t have my transcript, just a diploma?