Mandalore Cataclysm

The Mandalore Cataclysm was the final battle of the Mandalorian Crusade during the Second Fall of the Old Republic Era. Due to the Mandalorian's stubbornness and refusal to surrender, the battle left Mandalore almost completely destroyed due to the continuous fighting.

During the battle, several dark side warriors, led by Giladril were freed from Mandalorian prison. In the chaos of the fighting, the four sisters were able to escape the planet in a stolen Republic shuttle. They would later travel to Korriban and form the Neo-Sith Empire.