Canon

2557

From Halopedia, the Halo wiki

Version 1 of the timeline image
2556 ← 2557 → 2558
H4-ComposerFiringOnPhoenix.jpg
The Ur-Didact fires the Composer at New Phoenix.

Previous: 2555 • 2556

Next: 2558 • 2559


Century
26th century

Years in the 2550s
2550 • 2551 • 2552 • 2553 • 2554
2555 • 2556 • 2557 • 2558 • 2559

For a complete list, see our timeline category.

2557 was a year in the 2550s in the 26th century.

Events[edit]

January[edit]

January

February[edit]

February 2

February 21

March[edit]

March 3

  • An accident involving experimental weaponry aboard Argent Moon causes a gaseous toxic substance to spread throughout the ship via its air systems, killing nearly all aboard. Those closer to the accident are killed instantly and, depending on distance from the accident, the rest of the vessel's personnel begin suffering symptoms from the chemical minutes or hours later.[6]

March 17

  • All Argent Moon crew is killed by the biological agent, with only the shipboard AI, Rooker, still active. As a result, ONI loses contact with Argent Moon and Rooker sends a message that warns any ONI personnel who board the station of the situation, then puts the ship on a course that keeps it away from all inhabited systems and jettisons what remains he can into open space.[6]

April[edit]

April 9

May–June[edit]

May 6 to June 1

June[edit]

June 8

June 21

June 29

  • A massive UNSC fleet arrives to the Korinth Prior system and engages a Covenant remnant fleet led by Gek 'Lhar; the Ace of Spades, guided by 343 Guilty Spark, also arrives into the system. To deny Covenant's access to the shield world's remains, the UNSC fleet nukes the debris field, blowing it to bits and disrupting its gravity around the dwarf star; while some of debris are destroyed by the nukes, others are pulled into the system's star. Both Gek 'Lhar's fleet and the Ace of Spades retreat into slipspace.[9]

July[edit]

July 2

July 21

  • Having tried in vain for three years, Jul 'Mdama's Covenant faction finally gain access to the shield world Requiem; Shipmaster Jul 'Mdama orders his forces to board UNSC Forward Unto Dawn to keep the ship from landing on Requiem.[10] Aboard the Forward Unto Dawn, Cortana wakes John-117 from his cryotube and warns him of the intruders. Once off the frigate, they are forcibly pulled into the artificial planet.[11]
  • John-117 and Cortana engage 'Mdama's Covenant forces on Requiem while attempting to find a way back to UNSC-controlled space. Meanwhile, UNSC 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 Didact from imprisonment. Bent on preventing human ascendance, the Didact leaves immediately and joins forces with Jul 'Mdama's Covenant.[12]
  • 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 'Mdama's Covenant forces. Afterwards, 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.[13][14]
  • Del Rio orders the Chief to join Gypsy Company and destroy Requiem's gravity well generator so that the Infinity can depart.[15]
    • During the mission, John-117 encounters a vision of the Librarian, who warns him of the Didact's true 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.[15]

Between July 22-July 23

  • After the Infinity returns to Earth, FLEETCOM immediately relieves Captain Del Rio of his duties as captain of the ship due to his actions on Requiem;