Possible to add a 6th option ?
hear me out…
AA guns can never attack.
On defense AA participates in every round of combat (as any normal unit currently does). Rolling one dice per AA gun hitting on 1 (2 if radar is researched) however (and obviously) AA guns can only hit aircraft and defender will choose the casualty’s. Attacking aircraft hit by AA guns are moved to the casualty zone just as if they were hit by any other unit. OR Attacking aircraft hit by AA guns are immediately removed from battle and do not return fire. OR Attacking aircraft hit by AA guns are immediately removed from battle ON THE FIRST ROUND ONLY. Subsequent rounds attacking aircraft hit by AA will be moved to casualty zone and return fire.
I really have never understood A&A anti aircraft rules… in a real battle the aa guns are not going to just stop shooting after a couple minutes lol that makes no sense. Like the AA gun operator gets bored because the crappy gun can never score a hit anyhow and he falls asleep… 😛
if not i vote for option #4