Editing 2557

{{Era|Post}}
{{Timeline}}
===February===
'''February 2'''
*The ''[[Shadow of Intent]]'' leaves the [[Urs system]] for a diplomatic mission in former Covenant territory.<ref name="Catalog">[https://forums.halowaypoint.com/yaf_postsm2969315_Catalog-Interaction.aspx#post2969315 '''Halo Waypoint''': ''Catalog Interaction - Page 14'']</ref>

'''February 21'''
*The {{UNSCship|Infinity}} is commissioned into service.<ref>'''Halo 4''', ''[[The Commissioning]]''</ref><ref name="packet">'''[[Halo 4 Limited Edition]]''' — ''[[Infinity Briefing Packet]]''</ref>

===May-June===
'''May 6-June 1'''
*The ''Shadow of Intent'' participates in naval exercises with the [[UNSC Navy]] in a [[Joint Occupation Zone]]. After this, the ''Shadow of Intent'' is tasked with the protection of [[Sanghelios]] and [[Sangheili]] colonies.<ref name="Catalog"/>

===June===
'''June 18'''
*The UNSC ''Rubicon'' arrives at the ruins of [[Installation 00]] and deploys several remote contact teams to Installation 00's surface.<ref name="provenance">'''[[Eleventh Hour reports]]''', Report #4 ''Provenance''</ref> 
'''June 27'''
*After 8.3 days, all contact with the RCTs is severed. Only RCT-06 returns to the ''Rubicon'', having suffered extensive casualties. However, they bring the source of the signal aboard: the remains of the monitor [[343 Guilty Spark]].<ref name="provenance"/>
*After properly calibrating their AI translator, the human team began to interrogate Spark, hoping to gain insight into the ancient human-Forerunner relations and the Didact.<ref>'''Halo: Primordium''', ''pages 11-13''</ref> Spark, acknowledging the humans as "the true Reclaimers"<ref>'''Halo: Primordium''', ''page 371''</ref> proceeds to describe the events that led to [[Chakas|his former human self]] becoming a monitor.
'''June 30'''
*After Spark finishes his story, his robotic shell powers down and is jettisoned into space by order of the ONI team commander. Having successfully uploaded his data stream into the ship's computers, however, Spark disables ''Rubicon''<nowiki>'</nowiki>s AI and takes full control of the vessel. Having come to the conclusion that the Librarian is alive as a result of long study, and that he has need for the ship and its crew, Spark puts them to sleep and sets course to where he believes the Librarian could be found.<ref>'''Halo: Primordium''', ''pages 376-379''</ref>

===July===
'''July 2'''
*48 hours after ''Rubicon'''s last notice, the ONI sends search and rescue teams to find the ship, but the ''Rubicon'' is not found.<ref name="Catalog"/>

'''July 2-July 21'''
*[[Codename: SURGEON]] sends to [[Codename: COALMINER]] a [[Eleventh Hour reports|five-reports series]] about the status quo of the post-[[Human-Covenant war|war]] [[Milky Way|galaxy]].

'''July 21'''
*Having tried in vain for [[2554|three years]], [[Jul 'Mdama's Covenant faction]] finally gain access to the [[shield world]] [[Requiem]]; [[Shipmaster]] [[Jul 'Mdama]] orders his forces to board {{UNSCShip|Forward Unto Dawn}} to keep the ship from landing on Requiem.<ref name="terminal">[http://www.halowaypoint.com/en-us/Universe/detail/halo-4-terminal-jul-mdama/0f378de5-e0e3-4f31-a1e1-2a363af4094d '''Halo Waypoint:''' ''Halo 4 Terminal: Jul 'Mdama'']</ref> Aboard the ''Forward Unto Dawn'', [[Cortana]] wakes [[John-117]] from his [[cryotube]] and warns him of the intruders. Once off the [[UNSC frigate|frigate]], they are forcibly pulled into Requiem.<ref>'''Halo 4''', campaign level ''[[Dawn (level)|Dawn]]''</ref>

'''July 21-July 24'''
*John-117 and Cortana engage Covenant forces on Requiem while attempting to find a way back to UNSC-controlled space. Meanwhile, {{UNSCShip|Infinity}} is approaching Requiem, oblivious of the [[gravity well]] which pulled the ''Dawn'' and many Covenant ships inside. While attempting to clear the communications interference preventing them from contacting ''Infinity'', John-117 and Cortana are attacked by mechanical [[Promethean]] forces. Activating a supposed broadcast relay in Requiem's core, John-117 instead accidentally releases the [[Ur-Didact|Didact]] from imprisonment. Bent on preventing human ascendance, the Didact leaves immediately and joins forces with the Covenant.<ref>'''Halo 4''', campaign level ''[[Forerunner (level)|Forerunner]]''</ref>

*UNSC ''Infinity'' crashes on Requiem. The Didact makes for the crash-site, followed by the Master Chief, who reunites with the UNSC for the first time in years and assists in the defense of the stranded ''Infinity'', eventually driving back the Didact and the Covenant forces. Afterwards, [[Captain (Navy)|Captain]] [[Andrew Del Rio]] has a difference of opinion with the Master Chief on whether or not they should leave Requiem, or stay and deal with the Didact.<ref name="infinity">'''Halo 4''', campaign level ''[[Infinity (Halo 4 level)|Infinity]]''</ref> In the end, Del Rio orders the Chief to join Gypsy Company and destroy Requiem's gravity well generator so that the ''Infinity'' can depart.<ref name="reclaimer">'''Halo 4''', campaign level ''[[Reclaimer (level)|Reclaimer]]''</ref>

*During the mission, John-117 encounters a vision of the [[Librarian]], who warns him of the Didact's plan: to use a machine known as the [[Composer]] to neutralize humanity once and for all. To fight the Didact, the Librarian provides the Spartan with additional genetic enhancements, including an immunity to the Composer. Once the gravity well is destroyed, Captain Del Rio orders the ''Infinity'' to leave Requiem immediately. Disobeying orders, the Master Chief stays behind in an effort to stop the Didact.<ref name="reclaimer"/>

*[[Raid on Ivanoff Station]]: John-117 pursues the Didact as he travels to ''[[Ivanoff Station]]'' to acquire the Composer. The Didact is eventually successful and uses the Composer to digitize the occupants of ''Ivanoff'', save for John-117 who is saved by the Librarian's enhancements.<ref>'''Halo 4''', campaign level ''[[Composer (level)|Composer]]''</ref>

*After the ''Infinity'' returns to [[Earth]], [[UNSC Fleet Command|FLEETCOM]] immediately relieves Captain Del Rio of his duties as captain of the ship due to his actions on Requiem; [[Thomas Lasky]] is promoted in his place.<ref name="midnight">'''Halo 4''', campaign level ''[[Midnight]]''</ref>

*Between July 22 and July 24, the Didact repeatedly contacts [[Catalog]] and requests authorization to take control of the ecumene; Catalog rejects his requests.<ref name="Catalog"/>

'''July 25'''
*[[Battle of Earth (2557)|New Phoenix Incident]]: As the Didact plans to attack Earth and wipe out humanity using the Composer, John-117 follows him in close pursuit. When the Didact reaches Earth, the ''Infinity'' and the [[UNSC Home Fleet]] engage his ship immediately. Armed with a [[HAVOK tactical nuclear weapon|nuclear device]], John-117 makes his way into the ship and confronts the Didact, but not before the Forerunner uses the Composer to digitize the population of [[New Phoenix]], [[United Republic of North America|URNA]]. With the aid of a rampant Cortana, the Master Chief is eventually able to defeat the Didact and destroy his ship. Cortana sacrifices herself to save John-117 from the explosion and the Spartan is recovered from the debris field soon after.<ref name="midnight"/>

'''July 25-July 28'''
*During a period of three days,<ref>'''[[Halo: Escalation]]''' - ''Issue #8''</ref> after his return aboard ''Infinity'', John is debriefed. Following his debriefing, John leaves ''Infinity''.<ref>'''Halo: Escalation''' - ''Issue #3'' ('''[[Vladimir Scruggs]]''': ''"What about your pal, the Master Chief? Any of you heard of him lately?"'')</ref>

*After the New Phoenix Incident, [[Gabriel Thorne]] volunteers to be a member of the [[SPARTAN-IV program]].<ref>'''[[Spartan Ops]]''', S01E04 ''[[S1/Didact's Hand|Didact's Hand]]''</ref>

===December===
'''December 5'''
*[[Roland]] becomes the {{UNSCShip|Infinity}}'s [[Artificial Intelligence|AI]].<ref name="VIS">'''[[Halo 4: The Essential Visual Guide]]'''</ref>

==Sources==
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