United Nations, Frieden, and Koslovic forces clashing sometime between 2160 and 2170. (Halo Mythos)

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The Jovian Moons Campaign was a brief conflict in 2160 between the corporate-backed Friedens and the neo-communist Koslovics on several of the Jovian moons, spurred by a Frieden attack on a team of colonial advisers sent by the United Nations to help police the often violent region. Though the conflict was brief, it saw heavy casualties, including many United Nations forces who were sent to try and stop the fighting. This conflict was the first major fighting in what would become nearly a decade of continuous warfare in the extraterrestrial colonies in the Sol system, ending in the six year-long Interplanetary War.

Related Media

These events are referenced in multiple reference books, including the Halo Encyclopedia and Halo Mythos.