United States Marine Corps USMC United States Marine Corps Royal Marines Cuerpo de Marines de los Estados Unidos Cuerpo de Marines de los Estados Unidos Corps des Marines des États-Unis חיל המרינס האמריקני संयुक्त राज्य मरीन कॉर्प्स アメリカ海兵隊 Corpo de Fuzileiros Navais dos Estados Unidos 美国海军陆战队 USMC United States Marine Corps The United States Marine Corps (USMC), also referred to as the United States Marines, is a branch of the United States Armed Forces responsible for conducting expeditionary and amphibious operations with the United States Navy as well as the Army and Air Force.