I really think you've missunderstaood the whole idea of Aces High Isatheprophet.
Limmited number of missions? There are no "real" missions unless someone sets one up in the mission planner. It is not a single player game and it is nothing like CFS. The thing with "co-op" is ALLWAYS in AH since you get to choose one country to fly for and then you fight two other countries.
It is a mega player online sim wich makes it able to you to fly with 200 other players, and sometimes more, it's not limmited to 8 players like CFS's boring All vs All mode.
You really oughta download it again, you'll get a two week free trail period and then you can decide.
These are the planes you can fly:
A6M5b
B-17G
B-26B
Bf 109F-4
Bf 109G-10
Bf 109G-2
Bf 109G-6
C-47A
C.202
C.205
F4U-1C
F4U-1D
Fw 190A-5
Fw 190A-8
Ju 88A-4
La-5FN
Lancaster III
N1K2-J
P-38L
P-47D-25
P-47D-30
P51D Mustang
Spitfire MkIX
Spitfire V
Typhoon
Yak-9U
And these are the veichles you can drive:
M-3
M-16
Ostwind
Panzer IV Type H
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Rasmus "Wilbus" Mattsson
III/JG5 "EisMeer"