USCIS offers a toll-free military help line, exclusively for members of the United States military and their immediate families. USCIS customer service specialists are available to answer calls during regular duty hours.
Toll-Free Number:1-877-CIS-4MIL (1-877-247-4645)
Hours of Service: Monday through Friday from 8 a.m. until 4:30 p.m. CST (excluding federal holidays)
After Hours: After-hours callers will receive an email address (militaryinfo.nsc@dhs.gov) that they can use to contact USCIS for assistance.
Special Instructions: Identify yourself as a member of the Armed Forces or a family member to expedite your call.
Callers can get help with immigration-related information, including:
- Track Form N-400 application for naturalization
- Notify USCIS of a new mailing address or duty station
- Check the status of an application or petition
- Information on bringing a spouse, fiancé(e) or adopted child to the U.S.
- Obtain posthumous citizenship for a deceased member of the Armed Services
- Submit an application for expedited processing
Service members and their families stationed in the United States or overseas may access the help line using the toll-free number, through their base telephone operator or using the Defense Switched Network (DSN).
Source: USCIS

