UNSC Agincourt (Onyx)

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The UNSC Agincourt was a UNSC vessel of unknown type in operation in the early 2550's. In October 2552, it was sent to planet Onyx to offload supplies at Camp Currahee for the incoming candidates for Spartan-III Delta Company. As they were leaving, the camp commandant, Lieutenant Commander Ambrose aka Spartan-051, asked for observational assistance from the craft after hearing strange sounds coming from the jungle. The Agincourt discovered, and was destroyed by, two hundred Sentinels that had been activated within Onyx, the next phase in the Forerunners plan to wipe out the Flood while still protecting a significant portion of the galaxies' species. There where trillions of them, and they actually formed the planets crust which explained the absence of tectonic activity.