The Endor campaign is even more bonkers.
The Emperor claims that there is an entire legion (about 5000) of his best troops there but we only see the sort of troop numbers we would expect to see guarding an instillation of such importance.
The Empire sends in AT-STs when speeders, wheeled vehicles and ground troops would be better suited for forest combat.
No carpet bombing (which would make even better sense than sending in troops).
No gun emplacements or aircraft cover for the shield dish.
The Rebels are just as bad.
They have a large ship and never consider landing it on the platform or near the dish and blowing it up.
When the battle kicks off no fighter or bomber craft enter the atmosphere to shoot the dish off it's tower.
With a ship that size why aren't they carrying more guns or even some suicide droids strapped with explosives?