Platinum Team

Platinum Team is a unit.

Battle of Lares
SPARTANs were selected from the and  to be designated as the Platinum Team. The new SPARTAN team was deployed on Lares, an outer colony, to defend it from a relatively small Covenant force. By the time the SPARTANs arrived, a quarter of the entire colony had already been decimated. The SPARTANs first searched the destroyed towns for any survivors, and Dom-094 found one. Once the Platinum Team entered where the most of the fighting took place, it changed the tides of the surface battles, forcing the Covenant to retreat into space. In orbit, the UNSC fleet of Lares narrowly destroyed the entire Covenant invasion at the cost of twenty-three out of thirty-two ships. After the battle, the individual members of the Platinum Team were sent on separate missions, most of them not seeing each other for another several decades.

Battle of Gliese 581 g
Gliese 581 g, the third largest human colony, came under attack in late 2551 by a Covenant armada of 40 warships. Like on Lares, the Platinum Team was called to the colony to defend it. The SPARTANs fought through  before landing on the planet's surface to drive away Covenant ground forces. During the battle, had intercepted a Covenant transmission regarding an artifact called the Contumacy. The Covenant themselves knew little of the relic, but it required three key pieces to unlock. A map on the locations of all three pieces along with the artifact itself were within an underground Forerunner structure on the planet. The Platinum Team was brought to the structure by a Pelican, and fought to the map. However, the Covenant had already beaten the SPARTANs to the map, and was carrying it to the battleship, Desolate Inquisition. The SPARTAN team hijacked a, which was then piloted by Andrew-067, in order to fly to the battleship. The SPARTANs successfully obtained the map suffering no casualties, but were unable to safely escape, due to the number of pursuing enemies. Andrew-067 volunteered to stay behind to stall the approaching Covenant. As the other SPARTANs left in the phantom, the shipmaster approached Andrew-067 alone and challenged him in a sword duel. After the SPARTAN defeated and killed the Sangheili, he was just lucky enough to successfully find a, and he safely flew away from the battleship, seconds before its destruction by several shells.

Team Composition
It should be noted that those listed as MIA have all been confirmed KIA as of the 2570s.