I have been playing GC recently, AD. Reckon I'll take a swing at this.
can i move the destroyer forward or back a sea zone or i cant because there is the American destroyers in the way and i have to destroy them first? like you know how in d-day you cant move your units forward because there is the enemy and you have to destroy the enemy first.
During the movement phase, you may freely move land, sea and air units out of territories and sea zones that contain enemy units. There is no locking of units in combat.
...how it says you gain victory points for every undamaged airfield you have. if i have 1 American airfield after round 1 and build another in my build an airfield phase do i gain an extra victory point for the fresh airfield i built or i don't include the one i built? and just have the one i had at the start of the game?
In Phase 3, airfields are built in step 3 and victory points are assessed in step 5. The rules for step 5 say to count "each undamaged airfield he or she controls." There is no stipulation regarding when that control began. Therefore, the new airfields are included in the count. In your example, you will add 2 victory points to America's vp track.
Hope this helps. GC Rules!