Military Finance Customer Service is located at 10720 Mount Belvedere Boulevard Building P-10720 Clark Hall Lobby, Fort Drum, NY 13602. Military Finance Customer Service can be reached by their main phone number at (315) 772-5529. Alternatively, you can reach Military Finance Customer Service by phone at (315) 772-7446. The listed DSN line is 772-5529. Visit the Military Finance Customer Service website by clicking here.