Blizzard has changed up PvP BattleGroups up a little bit. In a fun way, of course. Blizzard has given each individual group its own name, and got rid of those ungly numbers.
They are using game-related names to make it easier and much more fun for BattleGroups. You probably should learn yours as nobody is going to be saying "I'm in battlegroup 4" anymore!
You can find the complete listing of the names on the
BattleGroups Page.
