Currently the only AA units se have are AA and SPAA with can only defend the stack o province that's being attacked.
I think flak gun units could be added (maybe SP flak gun also?) With the difference that these units can attack aircraft within a certain radius and hit once every 30 minutes like artillery, they can also defend just like normal AA and SPAA. The downside of these abilities is that they have less attack and defense than normal AA and SPAA.
A second feature, could be that only flak guns could attack and defend from strategic bombers since these aircraft attacked from high altitude and you couldn't shoot these planes with bullets, but with higher attack and defense since these guns were made to shoot down these planes
I think flak gun units could be added (maybe SP flak gun also?) With the difference that these units can attack aircraft within a certain radius and hit once every 30 minutes like artillery, they can also defend just like normal AA and SPAA. The downside of these abilities is that they have less attack and defense than normal AA and SPAA.
A second feature, could be that only flak guns could attack and defend from strategic bombers since these aircraft attacked from high altitude and you couldn't shoot these planes with bullets, but with higher attack and defense since these guns were made to shoot down these planes