From Halopedia, the Halo wiki
- Early February: Edward Buck requests a transfer for the Orbital Drop Shock Troopers in response to the loss of his homeworld, Draco III.
- February 27: Edward Buck is transferred to the ODSTs by UNSC High Command.
- May: After a long drawn out battle, the Battle of Actium ends in a UNSC defeat and Actium is glassed.
- May 10: During the Battle of Actium, Colonel Akono Menteith delivers a stirring speech, rallying the men and women of the 53rd Armored Division to perform great feats of heroism.
- May 30: A conversation takes place between Franklin Mendez and Kurt-051, regarding the reassignment of some members of SPARTAN-III Beta Company, including SPARTAN-B312 and Kat-B320, to non-combat roles.
- July 3: Operation: TORPEDO commences. Spartan-IIIs of Beta Company launch an assault against a Covenant refinery on Pegasi Delta. 298 of the 300 SPARTAN-IIIs are killed during the assault, with Tom-B292 and Lucy-B091 as the only survivors.
- September: Edward Buck takes shore leave on Castellaneta in orbit over Saturn, where he meets ONI operative Veronica Dare for the first time.
- September 16: Class-II Spartan-IIs undergo augmentations. Yasmine Zaman has her fourteenth birthday.
- At some point during her augmentations, Yasmine Zaman dies from complications. Her brain is later donated for the creation of the AI known as "Melissa".
- Richard Lash transfers to the Prowler Corps.
- Natalie Aiken is born on Vodin. Her mother dies during childbirth, leaving her father, Randall Aiken, to raise her.
- Mason Hundley's father dies in the Procellarum basin on Luna, where his skiff ran into severe winds during a retrieval maneuver.
- Halo: The Essential Visual Guide, page 26
- Halo: New Blood, Chapter 2
- Jessica Shea Twitter Today in Halo 1/10/2545
- Jessica Shea Twitter Today in Halo 2/27/2545
- Halo Waypoint video, Hero-Courage
- Bungie.net: NOBLE TEAM PERFORMANCE REPORTS
- Halo: Ghosts of Onyx, pages 13-27
- Halo: Ghosts of Onyx, page 27
- Halo: New Blood, Chapter 6
- Axon Clips Chapter 11
- Halo Waypoint: Randall Aiken
- Halo Waypoint: Mason Hundley