From Halopedia, the Halo wiki

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Screenshot of Jai-006 and Thel 'Vadamee battling in Halo 2: Anniversary terminals.
Jai-006 grapples with Thel 'Vadamee during the Battle of the Rubble.

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26th century

Years in the 2530s

For a complete list, see our timeline category.

2535 was a year in the 2530s in the 26th century. It was a turning point in the Human-Covenant War. With the destruction of Jericho VII, most major Outer Colonies had been destroyed. In order to protect Earth and the remaining colonies, the Cole Protocol was established by military order. Human ships must, when forced to withdraw, not move on to a colony-bound vector, even if that means jumping without proper navigational calculations. If blind jumps are not possible, the ship's commanding officer must order a self-destruction sequence if capture is imminent. In addition, it is also imperative that the shipboard AI construct's data core not fall into Covenant hands; thus, part of this protocol involves either the removal or destruction of the ship's AI in extreme situations. Additionally, no captured Covenant ships or technology may be brought back to a human planet without being checked extensively for surveillance devices.



January 29


February 12


December 25

Unknown date[edit]


  1. ^ Halo Encyclopedia (2022 edition), page 250
  2. ^ Halo: The Fall of Reach, page 8 ("Their lateral lines brightened with plasma—then discharged and rained fire down upon Jericho VII.")
  3. ^ Halo Encyclopedia (2022 edition), page 102
  4. ^ Halo: Reach, Armory description
  5. ^ Halo: Reach, Data pad 16