so those divisions should stay in reserve for a certain time? that should prevent them from entering the battle.
They do start as reserves but we all know that they will join soon enough and its based on the corps commander level (plus other things). My point is they shouldn't even be possible defenders untill they actually off load. It takes way longer to off load a tank division than what is simulated in the game. heck even off loading a battalion of heavy artillery would take many hours to do. And this same exploit would be there for the airlift mission (minus the tanks of course).