Because the US Marine Corps is one of its five independent services (Army, Navy, Air Force, Marine Corps and Coast Guard). Administratively, both the US Marine Corps and the US Navy belong to the US Navy Department under the US Department of Defense. Moreover, under normal circumstances, the US Marine Corps performs training and combat tasks as a separate service.

Speaking of the unique position of the US Marine Corps, we can see it from its history.

The development history of the US Marine Corps can be traced back to the "Colonial Marine Corps" originally established in Philadelphia during the Revolutionary War. At that time,1775165438+1October 10 authorized by the second colonial congress, two battalions were established. Therefore, this day is also designated as Marine Corps Day.

After the American War, both the colonial navy and the colonial marine corps were dissolved in 1783. Although there were still several Marine Corps detachments scattered on the warships of the US Navy at that time, the last one was dissolved in September of that year. It was not until 1798 that the United States re-established the Marine Corps. Because there was a brief maritime conflict between the United States and France at that time, Congress decided to formally establish a standing US Marine Corps. The main source of soldiers is the August recruitment of the Ministry of War 1797. In order to cope with many newly-built escort ships, the US Congress authorized the navy surge bill in March 1794: each escort ship can recruit several marines.

This shows that the US Marine Corps is indeed a relatively unique armed force. It is not directly affiliated with the US Navy, but an independent service.