I Beleave it takes 8, 88MM HE rounds to kill a hanger(at an airfield) and 16, 75MM HE Rounds howearver. The Funny thing is that it apears that thier is not a direct HE equivelancey with Arcraft Ordance, This would mean that the 88 HE shell would have an HE equilvancy of aprox. 300 pounds, since hangers at airfields take 2500 pounds to kill, the odd part comes in when you nead to fire 2 88HE to kill a bunker(ammo,fuel, ect) since a 100 pound bomb is capable of killing one all by it's self, I wounder if their is now a seperat coding for this. Also Osty rounds apear to be half as effective as before aganst structures, it now apears to take twice as much ammo to kill any given structure as it used to with them.