AggieFlyboy said:
No offense to to my Marine Corps brethren, but the best option is to return the marines to their original mission as ship defense and put the remainder as an amphibious division in the army
Nah. America needs a Marine Corps element. When you break it down it is just another light and responsive force vs a heavy juggernaut debate. The Army has some capability with it's airborne, 10th Mountain, and even Ranger batts but there is always going to be a need for larger numbers of a swift tripwire type of standing force. It's not even an amphibious vs land force debate really in my eyes. It is a large ponderous force vs a flexible, small unit based, capable of autonomy, strike/rapid defense force. Look at the Fall of Afghanistan if you want a very current example. The Marine Corps fills that size need between a Ranger Battalion and a mechanized/airborne division. We are seeing more and more each year that goes by that hours, not days, matter in warfare. Marine Corps already has that mission and the ethos to enforce it along with a very rich history to draw upon.
I am sure the Army could spool up to it in time but now? In these times of geopolitical upheaval? Not smart to even attempt.
Something that is not truly quantifiable but a factor in my mind is also mentality. Dedicated light amphibious assault troops need a certain mindset that Big Army does not have, to be blunt. Organized units of proud and capable lightfighters NOT under full Big Army aegis is absolutely needed even to this day IMO. (Bias acknowledged as a former USMC grunt)