AA rolls against Strategic Bombing raids:
Since AA never brought down all planes in a bombing raid, but could seriously impact the accuracy, AA defensive roll from air bases, naval bases, and industrial complexes is changed as follows: 1 = -3 on damage from air raid, with another roll to get a 1 for kill; 2 = -2 on damage roll, plus kill die; 3 = -1 on damage, plus kill die, 4 = +0 on damage; 5 = +1 on damage; 6 = +2 on damage.
The comparison math on this would be… if you had 12 bombers attacking, using 12 avg dice rolls,
under normal rules, 2 bombers would be lost, with 55 damage points against targets. Under these rules, there would 1 bomber lost, but just 36 damage points against targets.