They tend to conceal the scattered mines on the ground, and as the foliage disappears from the trees, it removes what little cover the people had to shelter from hunting drones in the human safari.
Not all drones have military uses, plenty of innovative companies are developing drones that can make life better for everyone, whether it's picking fruit, cleaning windows or delivering pizza.
Humans have control of military drones, but some experts think cutting the puppet strings is inevitable as forces seek to gain the upper hand in battles.