It's not possible to use V1's and V2's as accurate tactical weapons. They had primitive analog electrical guidance systems that let them be accurate to within several miles radius (ie, if you were aiming at London you could be fairly sure that they would hit somewhere in or near the city).
They were exclusively terror weapons that had little to no effect on military targets. It would be pretty silly to have them flyable. If they were in the game they'd be little more than a minor novelty.