“Does it seem believable that the wars of the future will be fought entirely with robots while humans are safely miles away, monitoring and controlling?”
No, it doesn’t. If only one side has the robots, then they’ll still be targetting humans on the other side. If both sides have robots, they won’t just be targetting each others’ robots, they’ll also be targetting the humans controlling the robots. Either way, humans are going to be getting killed.
The most humane system of war would be to simply settle all wars with a duel, so that only one human life would need to be lost. I suggest that the heads of state be forced to fight those duels; I think it could bring about a golden age of peace the likes of which the world has never seen.
I still think a remote controlled vehicle for swift evac of wounded troops would be a great idea. And if it can shoot back, all the better.
This big drone could do dangerous resupply sorties to forward bases, for example in the Afghanistan mountains.