2537


 * The Insurrection of Mamore takes place on Mamore, resulting in the insurrectionist forces being put down by the Spartan-III Alpha Company.


 * The Battle of New Constantinople is fought in either 2536 or 2537.


 * The Battle of Leonis Minoris ends in a pyrrhic UNSC victory as two of the Leonis Minoris colonies are glassed and a third saved.


 * Heavy conflict takes place in the Bonanza Asteroid Belt, distinguishing the Spartan-III Alpha Company.


 * Operation: PROMETHEUS. Most of Spartan-III Alpha Company destroys a Covenant shipyard on asteroid K7-49, but all 300 of the participating Spartans are killed in the process.


 * Beta Company of the Spartan-III's is authorized.


 * The 2nd class of Spartan-IIs are conscripted. One of them is Yasmine Zaman.