Talk:Expedition/@comment-7401186-20150518232339/@comment-58.187.92.21-20150519065813

The Aerial support phase happens AFTER the initial fleet air combat, and your support air fleet have to engage enemy Fighters and air defense AGAIN.

Basically what it does is adding an extra aerial open attack phase, but unfortunately they aren't much of use when the enemy has strong Fighter power. I'm doubting their effectiveness even when the enemy doesn't have any Fighter power though.