Previous: Battle of the Silent Cartographer Concurrent: Battle of Installation 04 Next: Battle of the Containment Facility Assault on the Control Room Conflict: Human-Covenant war Date: September 20th, 2552 Place: Installation 04, around the Control Room Outcome: UNSC victory, Cortana within control room systems Belligerents United Nations Space Command Covenant Commanders John-117 Cortana Zealot Field Masters Strength Pelicans, including Echo 419 Fire Team Zulu Various other Marine squads M808B Main Battle Tank Warthog 1 SPARTAN-II 1 AI Covenant Sangheili Unggoy Kig-yar at least 12 Mgalekgolo Ghosts Banshees Wraiths Spirits Casualties at least 1 Pelican, many Marines Most Forces

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The Assault on the Control Room was a major conflict within the Battle of Installation 04.

The battle Edit

John-117 and Cortana traveled in Echo 419 to a canyon via a maze of underground tunnels. After making their way to a bridge, a Pelican containing Fire Team Zulu flew past. The Pelican dropped off the troops before leaving into an adjacent canyon, crashing nearby.

After the Master Chief reached the ground, he destroyed a Wraith and two ghosts to save the marines team. Further down the canyon he encountered the rest of Zulu, along with the crashed Pelican and a Scorpion Tank abandoned by another patrol.

After a travel through underground structures in the tank with Zulu and making contact with a lost Marine squad, the team made it to the end of the line at a tunnel simply too small for the tank. On the other side, the Master Chief was forced to abandon his team, after Cortana made contact with Echo 419 and ordered an emergency pick-up for them. SPARTAN-117 continued alone.

After going past another two Hunter pairs, he reached the Control Room. Upon his entrance, he placed Cortana into the Control room's mainframe. He was then ordered by Cortana to stop Keyes from reaching a building Keyes believed to be a weapons caché. He quickly heads back for Echo 419, leaving Cortana in the mainframe.

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