Thanks It was planes against planes. That was very helpful, but does leave the AA even more undesirable imho.
So fighters doesnt support ground troops, only air?

Im new to the game, and when Im attacking the AI (planes or ground troops) their AA always fire at me if im within range, but when I have AA, they (almost) never fire. Can anyone explain to me why? The following images shows 3 AA positions that should have fired against the enemy planes, though none...