Circle of Holy Light
The Circle of Holy Light, led by Halahk the Lifebringer, was part of the resistance against the Scourge, eventually seeking to escape from Lordaeron to Dalaran. When Arthas decided to destroy the rest of humanity in Lordaeron, he led his forces against the remaining Knights of the Silver Hand defending the area. The Circle of Holy Light, along with the Defenders of Justice and the Crippling Force, were stationed in Tirisfal Glades. Their combined efforts were unfortunately not enough to halt Arthas' attack, enabling the Scourge to murder the survivors and destroyed the resistance.