We have established a toll-free military help line, 877-CIS-4MIL (877-247-4645), TTY (800) 877-8339 and e-mail address at militaryinfo@uscis.dhs.gov exclusively for current members of the military and their families as well as veterans. Our representatives are available to answer calls Monday through Friday from 8 a.m. to 4 p.m. (Central), excluding federal holidays.

If you call after hours, you will receive an email address to contact us for assistance with immigration-related information, such as:

• Checking the status of your Form N-400, Application for Naturalization.
• Notifying us of a new mailing address or duty station.
• Obtaining posthumous citizenship for a deceased member of the U.S. armed forces.
• Submitting an application for expedited processing specific to military N-400 and N-600 applications.

Members of the U.S. armed forces and their families stationed in the U.S. or overseas may access the help line using the toll-free number through their base telephone operator or using the Defense Switched Network (DSN).

Operators will ask members of the general public to call our main service line available under the Contact Us link.