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The Jovian Moons Campaign began. Jovian secessionist attacks on United Nations Colonial Advisors on the moon Io led to three months of fighting between the Earth military and Jovian "Frieden" forces. Though this was not the first armed conflict in our Solar System, it was easily one of the bloodiest, and is generally considered to be the spark of increased friction and militarization that followed. The Jovian Moons Campaign escalated tensions, as Earth's national governments, many of which sponsored colonies within the system, began fighting proxy wars off-planet. As these continued, tensions on Earth mounted, leading to a number of armed conflicts on Earth itself.