Merchant Marine - 3D Bronze MedallionUnited States Merchant Marine Medallion This United States Merchant Marine Medallion honors a service unlike any other a civilian maritime force whose members have carried the lifeblood of the nation across dangerous seas in both peace and war. Though not a formal branch of the U. S. Armed Forces, the Merchant Marine has been federally recognized for wartime service, with mariners granted veteran status for their critical role supporting military