Actually, the soldier of the future is here. He is called LAWS : Legal Autonomous Weapons Systems. That is in the US. Easier to send robots than humans. The question still under study: the robot cannot make fine distinctions: shoot or not to shoot, depending on the situation. Ethical and moral questions, But AI is progressing every day.
I'm making my reservations for the next trip to the moon or the first trip to Mars. Very different and thought-provoking, which you are the master creator. xoxo