All of these cheats are to be entered on the main selection menu. WARNING! These cheats will disable auto-save and prevent you from saving your progress!
The following aircraft can be unlocked by beating the specified mission on any difficulty level. You will not be able to fly Japanese aircraft in Campaign or Mission mode until you finish Campaign mode once.
Unlockable
How to Unlock
A6M2 Zero, B5M1Kate
Beat Pearl Harbor: Suprise Attack
B-25G Mitchell
Beat Iwo Jima: Kamikazes
B-26B Marauder, Ki-61-1A Tony
Beat Guadalcanal: Strike
B6N1 Jill
Beat Gilbert Islands: Million Men
D4Y2 Judy
Beat Philippines: Samar Sea
F4F-3 Wildcat, F1M Pete
Beat Wake: Combat Air Patrol
F4U-1 Corsair, D3A1 Val
Beat Wake: Evacuate Admiral
F6F-3 Hellcat
Beat Marianas: Usurper
F8F Bearcat
Beat Iwo Jima: Landing
G4M2 Betty
Beat Wake: Wake Up
H8K Emily
Beat Guadalcanal: Tokyo Express
J7W Shinden, usage of Japanese aircraft in Campaign and Mission Modes
To unlock these aircraft, you must beat all the missions of the specified campaign on Ace difficulty. You do not have to beat the missions in order, but the aircraft is not awarded until you beat the final mission in the campaign on Ace, having already beaten the other missions on Ace. This may require you to beat the final mission in the campaign on Ace a second time.