For thoes of you who still play and enjoy HoI 1 you should consider getting this patch :
http://forum.paradoxplaza.com/forum/showthread.php?p=5024189#post5024189
It removes the stacking penalty on aircraft (fighters over 4).
http://forum.paradoxplaza.com/forum/showthread.php?p=5024189#post5024189
It removes the stacking penalty on aircraft (fighters over 4).