
The first film featured much more future-war scenes than the second. And in them, we see no Terminators. There are i think three major war sequences in the film. And in all of them, the human battle other machines. There are numerous landscape shots, and they arent crawling with Terminators, they're crawling with H-K's and those tank-things. The humans scour around, fighting machines but never Terminators. They blow up tanks, shoot at flying machines but never terminators.
A Terminators DOES show up in one scene though. Not walking around the battlefield. Reese is inside an underground bunker complex, when a man comes to the door to enter. Dogs start barking, he whips out a minigun and starts blasting the place--a Terminator! disguised as a person, infiltrating a bunker. This is what the Terminators are used for.
It is obvious that Cameron changed the original concept of the Termintor for the second film, and this will forever change the Terminator story. It looks cooler to see endoskeletons walking around and people wanted to see them in the second film, so Cameron put them in the combat battlefield. This is incorect though.
So there it is.