You need mobile infantry to take territory, or at least to hold the line to defend territory. But what do they say- always fighting the last war?
AI is moving very fast. I just a video of a humanoid robot. This particular model had a head and neck and torso, arms and fingers. That was probably to make it relatable to humans but the head and neck don’t need to be there. Anyway it was not programmed to do anything. It just had AI to teach itself. And so after a short while it sorted garbage from edible food and knew how to do the dishes. This robot was built very recently - in the last year or so. It won’t be long before this same model will know how to fire rockets, mortars and machine guns. Built it as a tank instead of a robot, it didn’t need people at all. At least not inside it. And since it is self learning once one learns what to do it will teach all others almost instantly.
Makes me wonder if the 3 laws of robotics are even relevant. They should be, but People unconcerned about human life will build these things and it won’t be very long before they are deployable.
Almost like the BOLOs from the last century’s science fiction.