Dien Bien Phu once again proves you want ground artillery and not primarily air artillery, a lesson we the West and America can’t learn.
That’s not saying “no air, no CAS” it’s you must have ground artillery superiority or at least parity and not rely on air support, never mind air supply. Cannons aren’t sexy but they work in any weather. Mortars aren’t high tech but in the Army now it’s the first question we salts ask “you’re taking the mortars, right?”
The USMC are about to learn this lesson about organic artillery and armor again, and no “high tech rockets” aren’t the same. In WW2 there were early assaults in the Pacific and by the Army as well where they didn’t take enough artillery, cuz like Air. Costly.