Human-Covenant War: Difference between revisions

Meanwhile, the majority of the human forces on ''In Amber Clad'' had traveled to Delta Halo's [[Library]] to obtain the [[Index]], which is the key to firing Halo. Originally, the Covenant had been unaware of the Index's importance, but luckily for them, Arbiter Thel 'Vadamee had obtained [[343 Guilty Spark]], the monitor of [[Installation 04]], while destroying the Heretic base.<ref name="oracle">''Halo 2'', campaign level, [[The Oracle]]</ref> The monitor, known to the Covenant as an Oracle, told the Prophets of the Index and the Arbiter was sent to retrieve the "Sacred Icon". The mission was complicated though by the unexpected release of the Flood. Despite this, the Arbiter successfully reached the Library and prevented the humans from claiming the Index. Just as [[Miranda Keyes]] claimed the index, the Arbiter stole it from her, kidnapping her and [[Sgt. Johnson]]. However, the Index was stolen from the Arbiter by the [[Jiralhanae Chieftain]] [[Tartarus]], who was under the Prophets' orders to retrieve the Index and kill the Arbiter, whom Tartarus knocked down an apparently bottomless shaft.<ref>''Halo 2'', campaign level, [[Quarantine Zone]]</ref> With the Index secure, the Prophets then ordered the Jiralhanae to begin eradicating the Sangheili, thus starting the [[Great Schism]]. Ultimately this led to the death of Tartarus at the hands of 'Vadamee and Johnson and a temporary alliance between the Sangheili and the human forces. Delta Halo was prevented from firing by Miranda Keyes while the Flood infected and absorbed the [[Prophet of Mercy]], leaving the Prophet of Truth firmly in control over the Covenant Empire.<ref>''Halo 2'', campaign level, [[The Great Journey (level)|The Great Journey]]</ref>

[[File:Ghosts of Onyx Cover.jpg|thumb|250px|right|[[SPARTAN Program|SPARTANs]] during the [[Onyx Conflict]].]]

Long before the events around Halo, the classified UNSC colony of [[Onyx]] had been designated the headquarters and training ground for the SPARTAN-III program. However, the UNSC had no idea that the planet was in fact a huge [[Sentinel|Forerunner structure]], integral to the [[Halo Array]], and composed of trillions of [[Onyx Sentinel|Sentinels]].<ref>''Halo: Ghosts of Onyx'', p. 377-378</ref> After John-117's destruction of Alpha Halo, the Sentinels were roused by the disruption of the Halo network and the portal leading into the [[Trevelyan|Shield World]] at the planet's core began to close. At this time, a small group of SPARTAN-IIIs were training in a top honors exercise on the surface. After the humans failed to exchange the proper counter-responses, the Sentinels relabeled the [[Reclaimer]]s as an "aboriginal subspecies" and began to exterminate them.<ref>''Halo: Ghosts of Onyx'', p. 133</ref> Led by [[Kurt-051]], the SPARTAN-IIIs fought a guerrilla war against the Sentinels until Doctor [[Catherine Halsey]] arrived on Onyx and explained the wider situation. Knowing that the Forerunner technology buried in Onyx's core could turn the tide of the war for humanity, Halsey used Forerunner technology to send a message to [[Fleet Admiral]] [[Terrence Hood|Sir Terrence Hood]], requesting reinforcements. Hood deployed [[Blue Team]] to Onyx, who stole [[Bloodied Spirit|a Covenant destroyer]] to reach the planet in time.<ref>''Halo: Ghosts of Onyx'', p. 221</ref>