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Template:Category Template:Triple battle infobox The Battle of Onyx was a heavy, prolonged military engagement between the Forerunner Sentinels, United Nations Space Command, and the Covenant.The Sentinals previously engaged with the two fleets were destroyed by covenant forces before Admiral Pattersons fleet arrived but only the actions of the spartan "Blue" Team kept more sentinals from being produced. The battle was resolved after the military actions of Admiral Patterson lured the covenant into a nuclear minefield therebye destroying a section of the Covenant armada. Afterward aproximatly 32 covenant warships under the command of Fleet Master Voro 'Mantakreev jumped in system and blew apart the remaining 8 UNSC ships. the covenant won the planet but sent the majority of the covenant ground forces were sent after "Blue" team to Onyx's "core", where a miniature slipspace rift led to another dimension outside of space and time were the forerunners had originally planned for the Reclaimers to hide in while the universe was purged of life. the majority of Blue Team was sealed inside but the commander of the group Spartan 051-Kurt stayed behind to detonate 2 Fenris nuclear warheads.