"Marines Need Submarines: Commandant Neller ..." Topic

…On Major War

"Why does the Marine Corps Commandant want the Navy to build more attack boats? "As a naval force, part of a maritime campaign, we need more attack submarines," Gen. Robert Neller said at the AFCEA-USNI WEST conference

Why? "I want to get where I'm going," Neller said to laughter from the audience. "A bunch of lance corporals with M4s on the flight deck are not going to help me out." In other words, if the amphibious warships carrying the Marines are to make it to striking distance of a hostile shore without being sunk, they need an escort of Navy submarines and aircraft — and (though Neller didn't mention this last one) probably also Aegis ships for anti-aircraft and missile defense…"
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Robert Heinlein had a vision in the Future History series of amphibious assault submarines. If I remember right one carried a battalion of marines, armor support, land transport, etc.