We have traditional autonomous weapons (and counter-defense). They operate on millisecond or faster timescales with existing RF sensors. They are not and will not be using LLMs or other transformers. Maybe ChatGPT will update some realtime Ada code; they formally verify some of that stuff so maybe that won't be terrifyingly dangerous.

Where autonomous transformer-based munitions will be used are basically "here is a photo of a face, find and kill this human" and loitering munitions will take their time analyzing video and then decide to identify and attack a target on their own.

EDIT: Or worse: "identify suspicious humans and kill them"