So, what did the Old Corps do when it ran into armored enemies that your bullets won’t do anything to but annoy and you’re out of naval gunfire range? :P
That’s what the new Marine amazon battalions are for.
The enemy will be screwed for sure. /s
It’ called ARTY, towed 105’s and 155’s.
1st BATT, 12th MAR, 3rd MAR DIV.
Vehicles and troops in the open-—FIRE FOR EFFECT!
The only time the Marines actually saw massed Japanese armor in WW2 was on Peleliu. They saw North Korean T-34’s. May have seen some PT-76’s in Vietnam, not sure. Definitely saw some T54/55’s in Kuwait (but they had an Army armored brigade in support there).
For most of that time a recoilless rifle was probably the heaviest AT weapon they had. The ONTOS was a strictly Marine Corps weapon system during Vietnam. I guess Javelins would be your modern equivalent?