This quest is not available in game.
Bring 10 Scarlet Insignia Rings to Deathguard Burgess in Brill.
Executor Zygand tells me you've been out killing Scarlet Crusaders. Tirisfal Glades is crawling with them.
Varimathras, lieutenant to The Dark Lady, is seeing to it personally that the scum of Azeroth, the Human race, gets wiped into oblivion. Here in Tirisfal Glades we face a particularly annoying breed of humans: The Scarlet Crusade.
Venture forth and wage an offensive on the Scarlet Crusade, <class>. Bring me back 10 Scarlet Insignia Rings as proof of your loyalty to Varimathras and The Dark Lady.