- February 7: A Sangheili Zealot activates a weapon on Sedra, causing a significant number of human fatalities.
- September 25: A musical event, Believe, takes place at the UNSC Symphony Hall at 1900 hours, and performed by the UNSC's own Symphony Orchestra. It is centered on remembering Master Chief Petty Officer John-117 and his service to the UNSC.
- After November 7: On board the UNSC Forward Unto Dawn, Cortana, showing clear signs of Rampancy, files a report on the history of the Forerunners and Humanity.[note 1]
Losses and DeathsEdit
- Alistair Estrin
- Arris Le
- Gregory Ramos
- Haisal Wari
- Jordan Gaines
- Mason Hundley
- Michael Horrigan
- Rowan Daoud
- Samantha Wisner
- ↑ This year can be figured out by taking the year Cortana was made in (2549/11/07) and adding seven years. In the Halo Legends episode Origins, Cortana speaks how she is 7 years old.
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