<Tr> <Th> Seal </Th> <Td> </Td> </Tr> <Tr> <Th> Marine Corps Emblem ("Eagle, Globe, and Anchor" or "EGA") variations also used as a "Branch of Service Insignia" on Marine Corps uniforms </Th> <Td> </Td> </Tr> <P> 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 amphibious operations with the United States Navy . The U.S. Marine Corps is one of the four armed service branches in the U.S. Department of Defense (DoD) and one of the seven uniformed services of the United States . </P> <P> The Marine Corps has been a component of the U.S. Department of the Navy since 30 June 1834, working closely with naval forces . The USMC operates installations on land and aboard sea - going amphibious warfare ships around the world . Additionally, several of the Marines' tactical aviation squadrons, primarily Marine Fighter Attack squadrons, are also embedded in Navy carrier air wings and operate from the aircraft carriers . </P>

What is the job of the marine corps