A timeline of all major events in the Halo universe from the time of the Forerunners through the rule of the Created.
Operation: GREY VEIL was an Office of Naval Intelligence mission to assassinate a Covenant Prophet on the planet Heian sometime in 2541.
The Battle for Alluvion was a major conflict in the Human-Covenant War that took place in the Bhaakto system some time in 2542.
The Battle of Psi Serpentis was a major conflict between a UNSC fleet of 162 warships led by the UNSC Everest and Admiral Preston Cole and two fleets of Covenant warships totaling over 300 ships in the Psi Serpentis system in April 2543.
The Battle of Miridem was an engagement between human and Covenant forces on and around the colony of Miridem.
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.
Operation: WARM BLANKET was an operation to recover Doctor Halsey from the Covenant after her capture during the Battle of Miridem in 2544.
Operation: IRON FIST was a military operation on the colony of Miridem after the Battle of Miridem in 2544 and prior to the colony's glassing.
