This addon is a fix of which BattlegroundTargets and BattlegroundTargets Classic which seems to be abandoned for the Cataclysm Classic.
A Friend-Enemy-Unit-Frame for battlegrounds.
Classic doesn't support class Specialization detection on the BattleGrounds as Classic API doesn't provide any way to distinguish Class Specializations (Arms, Resto, etc.) because GetBattlefieldScore doesn't return spec yet. I've made some kind of healers detection based on healer spells but that can sometimes make false positives.
As far as I concerned this version will be up and running on the CurseForge unless original authors come back and provide support for Cataclysm Classic and so on.