The Archdiocese for the Military Services, USAOr go to http://www.milarch.org and click on "Staff" (located on the top-menu bar). Then click on the name of the Department Director for Sacramental Records to send your request via e-mail.
P.O. Box 4469
Washington, DC 20017-0469
(202) 2629-9100; FAX (202) 269-9022
National Personnel Records Center
Military Personnel Records
9700 Page Avenue
St. Louis, MO 63132-5100
http://www.archives.gov/st-louis/military-personnel/