Invasion of the UNSC Infinity

This article's title is a callsign, an alias, or a nickname, as no proper name for the subject has been revealed.

Previous:	Raid on Harvester
Concurrent:	Escape from Librarian's Rest, Skirmish at Apex
Next:	Raid on Apex
Invasion of the UNSC Infinity
Conflict:	Post-Covenant War conflicts Requiem Campaign
Date:	February 2558
Location:	UNSC Infinity, Requiem orbit, Epoloch system
Outcome:	Tactical UNSC victory Invasion repelled UNSC Infinity secured Strategic Jul 'Mdama's Covenant/Promethean victory Doctor Catherine Halsey captured Infinity trapped in Requiem orbit by an interdiction web
Details Belligerents United Earth Government United Nations Space Command Jul 'Mdama's Covenant Didact's Prometheans Commanders Captain Thomas Lasky Spartan Commander Sarah Palmer Spartan Jared Miller Supreme Commander Jul 'Mdama Strength Expeditionary Strike Group 1 UNSC Infinity Spartan Operations SPARTAN-IVs Fireteam Crimson Fireteam Kodiak Fireteam Avalanche Fireteam Lancer UNSC Marines 1 stolen Phantom Several Zanar-pattern light cruisers Numerous Banshees Numerous Phantoms Numerous Promethean Knights Numerous Promethean Crawlers Numerous Promethean Watchers Numerous Sangheili Numerous Kig-Yar Numerous Unggoy Several Mgalekgolo Casualties Moderate infantry losses Sergeant Jaime Velasco Stolen Phantom (accidental friendly fire) Heavy At least 1 Zanar-pattern light cruiser Multiple Phantoms Multiple Banshees Most Covenant and Promethean boarders

During the Requiem Campaign, the UNSC Infinity suffered an invasion by Jul 'Mdama's Covenant and Promethean troops looking to destroy the vessel and capture Doctor Catherine Halsey in order to further Jul's plan to acces the Librarian's personality imprint on Requiem.

Prelude

Six months after the Battle of Requiem, the UNSC Infinity returned to the shield world to set up research bases to study the Forerunner technology present while also fighting Jul 'Mdama's Covenant for control of the artificial planet. At the location known as "the Cauldron," Spartan Fireteam Crimson recovered a mysterious artifact which sucked in Doctor Henry Glassman when he accessed it aboard the UNSC Infinity. Subsequently, Doctor Catherine Halsey was brought aboard where she determined that the artifact was communicating information from the ship to Requiem.

As Halsey later attempted to understand the artifact, Jul 'Mdama utilized it to contact Halsey via her data pad to entice her into helping him, offering Halsey the truth about a great many things, including the Prometheans. As proof, Jul ensured that Fireteam Crimson retrieved "the Didact's Gift," a Durance containing the "soul" of a Promethean Knight who was originally a human digitized by the Composer during the New Phoenix Incident. Having provided proof, Jul further enticed Halsey by mentioning the Librarian, but Commander Sarah Palmer noticed Halsey's suspicious behavior and Captain Thomas Lasky had her arrested. However, Halsey subsequently escaped using an override code on Infinity's AI Roland and made contact with Jul whose identity she quickly deduced. Halsey offered Jul her help with the Librarian, but the communication was cut off by Roland who regained control of himself and alerted the ship's crew to Halsey's actions.

Battle

The invasion begins

As Doctor Catherine Halsey was about to be escorted to a cryo chamber on the orders of Captain Thomas Lasky, Jul 'Mdama started an invasion of the ship through the artifact that had been brought aboard the UNSC Infinity. Promethean boarders translocated in, surprising the Infinity's Marines, led by Commander Sarah Palmer, who were unprepared for such an attack. Despite their best efforts, the Prometheans were able to make it out of the hanger containing the artifact and into the ship's hallways. As Lasky retreated into an elevator with Halsey, he ordered all hands to battle stations to defend the ship. Palmer quickly ordered all Spartan fireteams to fall back to Infinity to help as well, even those performing operations on Requiem. To help prevent the Infinity from escaping, Jul used the artifact to tether the ship to Requiem using an interdiction web.

By the time Fireteam Crimson returned from an aborted operation in Apex, the Infinity was also under attack from several Zanar-pattern light cruisers as well as numerous Phantoms and Banshees which had used Infinity's hanger bays to deploy Jul's Covenant troops aboard the ship as well. With the Infinity's defenses unable to pick out Crimson's captured Phantom from all of the enemy targets, the Phantom was accidentally shot down by friendly fire and crashed into Bay 450 on Infinity.

Securing the hanger bay

After the crash-landing, Fireteam Crimson were ordered by Spartan Jared Miller to help the Marines in the hanger secure it from Covenant forces, including reinforcements arriving in Phantoms while Fireteams Kodiak and Avalanche were ordered to secure Fore Armory Twelve-Seven. Once the hanger was cleared of Covenant, Miller directed Crimson to the hanger bay door controls, but the door failed to close and another Phantom made it inside followed by a second Phantom as Miller attempted to fix the problem with the systems. Miller managed to restore Infinity's COM systems and r