The USMC is under the Navy. The Navy is it's own branch.
The US Navy SEALS is a Special Operations Group of the US Navy
The Seebees are the construction and engineering branch of the US Navy.
The US Army is not part of the US Navy . EDIT: The Marine Corps is technically part of the Navy
The US Navy!!
The branch of the US armed forces that has admirals is the Navy. The armed forces is made up of the army, air forces and the navy.
It is a separate US military branch in the Department of the Navy.
Navy
The United States Marine Corps and the United States Navy are two separate armed services, but both fall under the Department of the Navy, making them part of the same military branch. The Marine Corps is a separate branch of the military, but it operates under the administration and support of the Navy.
No, Marines are not considered part of the Navy. While they fall under the Department of the Navy and share some administrative functions, the Marine Corps is a separate branch of the military with its own unique missions, capabilities, and command structure.
US Navy October 1775
The number of military branches varies by country. In the US the primary four services are the US Army, US Navy, US Air Force and US Marine Corps. The Marine Corps is a part of the Department of the Navy. The US Coast Guard is brought into play during war time as well.
As far as the "US Army" was concerned, all rivers in Vietnam were considered to be "inland waters." The US Navy operated their "Riverine Forces" under their new branch titled the "Brown Water Navy." This was in contrast to the USN's deep water ocean going warships.