Investigated more:
>> cancelling unit move results in losing 50 prestige
>Only if it gained 50 prestige on move ?
I've captured town -> 50 prestige up. Undo move -> 50 prestige down and town changed back to previous owner, correct.
I've captured it again -> 0 prestige up. Undo move -> 50 prestige down and town changed back to previous owner.
>> not all enemy towns or flagged hexes respectively captured are awarded with prestige
>Should give prestige even for ones with flag
I've opened the purchase window with prestige value and it didn't change after I captured town, I had to reopen it.
And re the automatic supply for aircrafts, I thought that in original Panzer General II it was done during opponents turn if the aircraft stayed near airport, not my full next turn. But it's quite long time since I played it last time :)
Anyway, thanks for the game, I'm enjoying it!