@MindBlownAstronaut said in Rule clarification:
Lets say that Britain on their turn deploys a destroyer into a sea zone that has a german sub. On frances turn could they take a fighter and attack the subs? So that then in that battle there is a British destroyer and French fighter attacking a german sub. Would that work is is that not allowed, couldn’t find it in the rules.
Definitely not allowed. While multiple powers can defend together in the same square only the active power’s pieces are usable during the active Player’s Turn.
In essence, the British destroyer is completely ignored.