Have you read the book Forever Peace? I think it's a foretelling of this, in part. The book doesn't have drones, but what it does have is mechs that fight wars

Have you read the book Forever Peace? I think it's a foretelling of this, in part. The book doesn't have drones, but what it does have is mechs that fight wars with human remote pilots. War in the book essentially boils down to who can spend more money building more mechs. No humans get killed except by accident, or if the war happens to be against one of those impoverished nations barbaric enough to use human soldiers.