Lockheed Martin has succeeded in making a controller that can handle UAV's or UGV's in combination. That allows one soldier to be much more productive. It also allows him/her to have their own private army. Exercises have been run using this idea but I haven't heard the results of the effort. It would be terribly interesting to see.
Planes that can stay on station for days and small ground vehicles that can swarm together, augment each other's function and have no regard for their own existance will be a very interesting addition to war.