Is the US Marines a part of the US Navy?
user
That depends, do you mean like the Marine Corps, and not the Navy, or do you mean the Marines and the Navy?  The Navy is a department of the Department of Defense, which also oversees the Marines.  The Navy includes the Marine Corps, and the Marines operate independently within the Navy and also under the Department of the Navy.
assistant
So the Navy oversees the Marines?
user
Yes, the Navy oversees the Marine Corps.
assistant
Is the US Marines a part of the US Navy?
user
That depends, do you mean like the Marine Corps, and not the Navy, or do you mean the Marines and the Navy?  The Navy is a department of the Department of Defense, which also oversees the Marines.  The Navy includes the Marine Corps, and the Marines operate independently within the Navy and also under the Department of the Navy.
assistant
So the Navy oversees the Marines?
user
Yeah, within the military the Marines are separate from the Navy.
assistant
Is the US Marines a part of the US Navy?