You may have gotten caught up in the hype. It's still intelligence, logistics, bullets, missiles, and airplanes (etc.)

The beginnings of "automated murder" were anti-aircraft weapons that implemented a kind of mechanical computer that beat humans in predicting where aircraft were going to be (you have to shoot at where the plane is going to be when your bullets get there). Look up Norbert Wiener.

For a century it's been automation assisted, none of this is new, it's just been improving consistently. They had UAVs in WWI for gods sake. (flying things without people in them, used in war)