A timeline of all major events in the Halo universe from the time of the Forerunners through the rule of the Created.
The Spartan II program, led by Dr. Catherine Halsey, was a plan by the Office of Naval Intelligence to use children with superior genetic traits to create a group of super-soldiers in order to put an end to the ongoing Insurrection in the outer colonies.
Spartan-III Alpha company was the first of three Spartan-III companies to be recruited, trained, and put into service.
Spartan-III Beta company was the second of three Spartan-III companies to be recruited, trained, and put into service.
The flagship of the UNSC Navy and the first Infinity-class supercarrier ever constructed, the UNSC Infinity is the largest single human warship ever constructed, with a crew of over 17,000.
Spartan-III Gamma Company was the last of three Spartan-III companies to be recruited, trained, and put into service.
The Raid on Ivanoff Station was an attack by the Ur-Didact and his ship Mantle's Approach on the Office of Naval Intelligence research facility Ivanoff Station nearby Halo Installation 03 in July 2557.
Operation: BIRD IN HAND was a UNSC mission carried out by Spartan-II Blue Team to infiltrate and recover the Office of Naval Intelligence research vessel Argent Moon on October 23rd, 2558.
