If I land UK fighters in a Russian territory for example, do they participate in the battle if Germans attack the Russians? Or is only one power allowed in a zone at one time even? thanks in advance :?
What Panther said… so in your example, YES… UK fighters in Russian territory would help defend that territory if attacked along with the Russians… they just can’t fly out and help the Russians on attack… they still move and combat on the UK turn… but allied nations will defend together when attacked.