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The world managed to survive the Age of Strife relatively unscathed, falling under the control of a military plutocracy that oversaw the needs of its many production-combines. Early into the Great Crusade, Delsvaan refused assimilation into the nascent Imperium and was assailed by the VIth Legion under the command of the Emperor himself. The lightly armed conscript army of Delsvaan was no match for these Space Marines and quickly collapsed in the face of a vicious shock assault. In the aftermath of their victory, the VIth Legion conducted a great massacre at Delsvaan's city of Masaanore-Core. In the wake of the massacre the rest of the planet quickly surrendered rather than face the Emperor's wrath.