The Red Legion is a Cabal Legion currently led by Primus Ghaul. It is the primary antagonist force in Destiny 2.
Summary[]
The Red Legion was raised by Primus Ghaul in response to the distress call issued by the Skyburners. The Red Legion then descended upon the Last City of Earth, successfully invading and capturing the territory. During the fighting the Guardians were largely disabled, their efforts negated by the overwhelming invasion force.