The United Systems Military, or USM is a military organisation in human space, created through the unification of every military organization on Earth. The USM is both a martial and diplomatic organization, serving to maintain peaceful relations throughout the United Systems.


200 years after 2179, aboard the Auriga, the United Systems Military was finally able to perfectly clone Ellen Ripley after numerous failed attempts, and successfully extracted Queen embryo implanted within her. The USM began the repopulation process of the Xenomorphs through the use eggs produced by the Queen and impregnating the many human victims they had acquired from Frank Elgyn and his group of mercenaries. The Xenomorphs eventually escaped their captivity and wreaked havoc on board the Auriga, forcing the remaining USM personnel to abandon the Auriga.

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