2555


 * The M6H magnum is adopted as the UNSC's primary sidearm.
 * Tomas Navarro enters UNSC service.
 * Hannibal Weapon Systems takes over production of the MJOLNIR Rogue variant.
 * Lieutenant Commander Jameson Locke's special operations team arrives at Misriah Armory at Eos Chasma on Mars. Locke reviews ONI Eyes files procured from Sedra.
 * Late in the year an automated UNSC scout vehicle, Recon-14, begins transmitting from Alpha Shard, piquing the interests of the Office of Naval Intelligence. The probe continues to document the surface of the ring's fragment, reporting all noted anomalies to ONI. These transmissions are analyzed by several ONI specialists, including Doctor Madeline Tress. Recon-14 detects a group of Thanolekgolo eels below the shard's surface. When the probe ventures to investigate the eels, the abnormally aggressive Lekgolo attack it. The heavily damaged Recon-14 succeeds in transmitting its final recordings to ONI before being destroyed by the Thanolekgolo.
 * A joint Human-Sangheili force is sent to Installation 00 on a covert operation to discover a secret related to a scientific discovery.
 * August: Huragok Quick to Adjust and his human handler Sadie Endesha are captured by United Rebel Front soldiers on Talitsa. A team of Spartan-IVs is sent to rescue them and ultimately succeeds in their mission. Spartan Michael Crespo is detained by Spartans Buck and Agu following the former's defection to the URF.