It's just silly images and videos really. Military use would be using them to spread misinformation about the enemy? Idk that's been a think since forever, you don't really need some text to video model like for that instead of just "traditional" deepfakes and I feel like the impact is gonna be a lot less now that it's on everyone's mind that things can be fake. Actual weapons like drones don't really have much to do with image generators