Air sup. holy sh...!!!!

[Currahee]

Try leaving bombers on interdiction and fighters on air superiority, but for both bombers and fighters, keep all squadrons on "rest" until their readiness is 2/3 (67%). Don't let any seaborne forces get caught on the sea; they will be fairly safe in ports, it's very hard to damage them there, by air. If you're stronger on the ground, you should be able to invade England in spite of strong enemy air forces. And if the Allies' bombers are interdicting everything that moves, try shorter moves, just a few hexes at a time, the longer moves seem to attract more attention from enemy air.