welcome Painkiller
1a
Yes all units do battle. Only the attacker can retreat and only after at least one rd of combat. All attacking units must retreat to the same TT and that TT must be one where at least one unit came from. May only retreat one space from battle.
1b
There is combat
2
No. The enemy ships have the option of moving or staying for battle on their turn.
3
Not sure. You either get 1 AA shot per plane (regardless of the number of AA guns) or 1 shot per plane up to 3 plane per AAgun. Not sure which rules 42 uses
4
yes
5
only on amphibious assaults
6
correct. Movement doesn’t effect #of combat RDs. No limit to RDs. Yes attacker can retreat. You have to say who you’re rolling for
7
No and no
You guys are gonna have a blast :)