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!
Yes, but you’re assuming they’re in the open, not in, say, an Ardennes type engagement where overhead degrades artillery. And the old Corps didn’t have smart munitions, plus you’d have to get a direct hit on a T-64 or T-72 to stop it.
And arty can’t help you in a city with lots of tall buildings unless you want to spend a lot of time and munitions busting them up. The Old Corps didn’t exactly have a lot of anti-tank munitions in their infantry units...