The Aurora Chapter is a Loyalist Chapter of Space Marines that is a Second Founding Successor Chapter of the Ultramarines. Master of the lightning-fast armoured assault, the Aurora Chapter possess a sizeable armoury. Its vehicles are manufactured on its homeworld of Firestorm, a planet covered with industrial macro-complexes to rival most Forge Worlds in scale. Its name has become a byword for armoured assault across the Ultima Segmentum of the Imperium of Man that serves as its primary area of operations.