<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> <P> The history of the Marine Corps began when two battalions of Continental Marines were formed on 10 November 1775 in Philadelphia as a service branch of infantry troops capable of fighting both at sea and on shore . In the Pacific theater of World War II the Corps took the lead in a massive campaign of amphibious warfare, advancing from island to island . As of 2017, the USMC has around 186,000 active duty members and some 38,500 reserve Marines . It is the smallest U.S. military service within the DoD . </P>

Are the marines still a department of the navy