2551

2551

Glassing of the UNSC outer colony, Meridian.

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26th century

Previous: 2549 • 2550
Next: 2552 • 2553

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For a complete list, see our timeline category.

2551 was a year in the 2550s in the 26th century.

Events

January

January 24

• UNSC "smart" artificial intelligence Iona begins service.

February

February 19

• As part of Project CHRYSANTHEMUM, the SPARTAN-IIIs of Gamma Company begin their week-long augmentation process on the UNSC Hopeful in Sector K-009 folllowing its departure from Reach.

February 27

• The Hopeful returns to Reach following the Spartans' augmentation procedures.

Before May

• Before May, the CAS-class assault carrier Enduring Conviction, led by Let 'Volir, faces against the UNSC. During the battle, the Enduring Conviction performed impressive evasive maneuvers.

May

May 8

• Dr. Catherine Halsey undergoes the Hemley & Aubourn Behavior Analysis; the results make ONI increasingly wary about her reported unreliability.

November

November 24

• Mark V[B], the initial production model of the Mark V MJOLNIR armor, enters service.

December

December 5

• Covenant activity was witnessed at Lethbridge Industrial's Lethbridge Combat Fields on Concord.

December 6

• At 0720, as part of Operation: GYPSUM UNSC forces, including Sergeant Sigrid Eklund and M9 Wolverines, clear out the Caravelle province on Concord.
• Sigrid Eklund reports to Commander Renna regarding the events of Operation: GYPSUM indicating its success.
• On Concord; Operation: SHARP ANGLE is noted as confirmed, and Operation: OFFSET EYE is noted as pending.

December 22

• The Car & Pilot Magazine releases its December 2551 Edition. This includes a review of the new 2553 edition of the Civilian "Hog".

Unknown

• Pawel Czernek and John Tippett enter active service with the UNSC Marine Corps.
• Concord is attacked by the Covenant; the colony survives largely intact. The Venator MJOLNIR [GEN1] variant gains prominence in the attack.
• Gray Team is deployed on a mission against a Covenant facility within humanity's former territory.
• The Battle of Meridian ends. Meridian is glassed and Chalybs Defense Solutions facilities on the moon are abandoned. The Covenant discovers a Luminary on Meridian that leads to Earth.
• The UNSC Iroquois begins construction.
• Veta Lopis' mother dies.
• The M11 combat knife is manufactured by the Watershed Division.