Yes planes can pass over any zone that contain enemy ships, enemy planes, or enemy units. Planes cannot pass over neutral countries. In sbr’s they have to fight their way in if escorted or not if they are intercepted. After the interception or not then they get shot at by aaa and then if they survive that they get to bomb the factories and the tac bomber’s can bomb the airfields and naval bases. You are right that in the older version the aa was always active but not anymore. Hope this helps! :-)
air unit rules
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Can I do an amphibious assault on an island with only aircraft?
And can those aircraft also attack the sea zone surrounding the island? -
- This question is rather ambiguous. If you’re attacking with aircraft only (no land units), it’s not an amphibious assault. If you mean, “Can I conduct an amphibious assault without cruisers or battleships for shore bombardment?”, the answer is yes, you can.
- When conducting an amphibious assault, you have to choose which aircraft will participate in any naval battle and which will participate in the land combat; they cannot do both. Any naval battle must be resolved before amphibious landings can take place.