2546


 * Tom-B292 and Lucy-B091 become drill instructors for future SPARTAN-III companies.
 * Sargasso is invaded by the Covenant. The Type-46 Infantry Support Vehicle is first encountered by UNSC Defense Force personnel during the battle.
 * New Llanelli is attacked by the Covenant, who are victorious and glass the planet.
 * Lydus, a Jiralhanae Chieftain, leave the Oth Sonin system.