Cross-language battlegroups is a new feature that combines battlegroups from different languages into one, expanding the pool of players keen for PvP action in both Arenas and Battlegrounds. Players from realms of different languages will only ever face each other as opponents in battle and will not be playing on the same faction in Battlegrounds, ensuring that those playing on your side will speak the same language as you. Not all Battlegroups will be joined into Cross-Language Battlegroups, and this feature will not be affecting the Russian language Battlegroups.