Let me help you out by explaining further.In real life before a battel a lot of times they knew about number of what kind of plane one attacking force they might run in to,we here a lot of times,we knew we where going into a slaughter,and so on,or numbers where expected to be light and fighting so and so a plane.We know all the planes in the (war) but not any clue whats going to be at the Field I'm attacking,its only a guess.Or numbers that i should expect to have to fight in my battel or attack.