I think that air attacks would be very rare when the computer generates the forces. They are very expensive about ~300 points in the artillery section IIRC, and usually the limit for artillery is less then that. I was trying that last night . The easiest way to try out air attacks is to make your own battles in the editor, that was fun. Had 7 elite american planes with some Jumbos attacking a king tiger, 4 wirblewinds and a whole bunch of quad 20mm. They killed my tiger but I killed all the planes. Its a little hard to tell when the planes got hit or not, since there was just so much fire going around. The rocket(?) expolsions look like minature catastrophic explosions on the ground, plus they make huge craters, very well done.
Too bad there wasn't a DYO operations, now that would be just too cool. Too bad there is just so little time in a day to play this game.