2163

This is also the year the UNSC was created to shut down the rebel operations.
 * December 2163: In a conflict that stemmed from the Rain Forest Wars, the three primary Earth factions clashes again, this time on Mars. A series of lightening strikes against Koslovic forces near the Argyre Planitia marking the first extra-terrestrial deployment of Marines. The campaign is an unqualified success. As a result, future military doctrines favor large contingents of Marines for ground assaults and ship-boarding actions.