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.
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.
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!
NB - RA commands mean right-analog stick!
These missions can be completed on any difficulty level to unlock the corresponding Historical Mission.