@JECE - That was a stupid fucking question. It's like asking "Why aren't the Rangers p[art of the Army?" You stupid fuck, the Marines report to the secretary of the Navy. they are the elite landing force. The first to enter and the last to leave. They are the elite ground troops of the Navy, equivalent tot he Rangers. In fact, Marine Corps training is as tough as Special Forces training and most of the elite units of the other services take MCMAT training as it is the best military martial arts training in the free world (yes, we even train our allies' special forces units).
Why do you think the slogan is "The few. The proud. The Marines."? It is because we are an elite fighting force created to take beachheads that the Army Rangers and Army Special Forces (aka Green Berets) can't, just as the Navy Seals pull of the covert missions that even a small Delta Force team can't.
Rescued fifteen men today! Every one was a Green Beret!
Why are we still around? Well, let's look to Iwo Jima. Why do you think the boots on the ground were? I'll give you a hint, those weren't army boots on the ground or raising that flag! Gudalcanal? Marines!
From the halls of Montezuma to the shores of Tripoli, We will fight our country's "battles ont he land and on the sea." - The Marine Corps hymn. The oldest official song in the US military. That's right... We don't have an anthem or a theme. We have a fucking *hymn*!
No, the Marines are a truly proud service. Any one who graduates boot camp graduates proud to call themselves a Marine.
We are the President's military body guard. We escort him when he travels. We play his anthem every where he goes (note, he has an anthem, but we have a *hymn*).The Secret Service puts him first in close quarters, but they rely on *us* to have their backs and keep the whackos out, and his transits safe. We work with the Secret Service as a well oiled machine when it comes to Presidential detail. We protect the members of Congress. We guard the nations capital and all it's government buildings. Those are Army grunts you see standing at attention, they are Marines!
So the nation hasn't done away with us, nor will it ever, because we are the last line of defense and the first like of offense. We get it done!