Battle for the Truth and Reconciliation

Concurrent:	Battle of Installation 04
Next:	Mission to Destroy Installation 04
Battle for the Truth and Reconciliation
Conflict:	Human-Covenant War
Date:	September 19–22, 2552
Location:	Installation 04
Outcome:	UNSC tactical victories Hundreds of Covenant killed in all raids Hundreds of Flood killed in the second and third raids Eventual capture of the vessel by the UNSC in the third raid Third raid strategically insignificant due to the eventual destruction of the vessel
Details Belligerents United Nations Space Command Covenant Flood Commanders Second raid CAPT Jacob Keyes† MCPO John-117 Cortana Third raid Maj. Antonio Silva† Proto-Gravemind† Strength Second raid 1 SPARTAN-II Third raid Numerous Pelicans UNSC Marines ODSTs Surviving Pillar of Autumn crewmen Second raid Sangheili Unggoy Kig-Yar Mgalekgolo Type-29 Anti-Infantry Stationary Guns Covenant Special Operations strike team Special Operations Sangheili Special Operations Unggoy Third raid Few remaining Covenant forces Sangheili Unggoy Mgalekgolo Kig-Yar Remnants of Special Operations team Second Raid Pod infectors Combat forms Carrier forms Third Raid Pod infectors Casualties Second raid None Third raid All UNSC forces destroyed Second raid Heavy casualties inflicted by Flood and John-117 Third raid All remaining forces destroyed Second raid Dozens of Pod infectors Most, if not all combat forms Most, if not all carrier forms Proto-Gravemind Third raid All remaining forms killed

This page is about the larger battle to control the cruiser later on in the conflict. For the first raid conducted by John-117 to rescue Captain Keyes, see here.

During the ongoing campaign on Installation 04, the CCS-class battlecruiser became the focus of an ongoing battle between the forces of the Covenant defenders, the Flood and the United Nations Space Command.

John's return

During the UNSC raid on the Flood containment facility, Captain Keyes was infected by the Flood Super Cell via a Pod infector. Initially becoming a combat form, his tactical knowledge was considered important to the parasitic organisms, and he was converted into a Proto-Gravemind along with a Sangheili officer after the Flood began to take over the Truth and Reconciliation on September 21.

In order to destroy the Pillar of Autumn and sterilize the Flood outbreak, John-117 and AI Cortana required Captain Keyes' command neural interface, which contained the code for the Autumn's auto-destruct system. Initially arriving just outside of the control room, John had to escape from a seemingly infinite number of Flood attackers in a locked-down part of the ship by jumping out of it; a pool of the ship's reactor coolant broke his otherwise fatal fall. Returning up the gravity lift, John searched for an open door for the control room. The Captain managed to hold onto his humanity long enough to communicate with John via a UNSC comm system, confirming his survival. However, his orders to leave him and escape were taken less seriously and thought of by Cortana as evidence of being mentally disturbed.

Finally reaching the center, they found that they were too late: Keyes had fully merged with the blob of Flood biomass and became a part of the proto-Gravemind. With no other option, John punched through the former Captain's head and took out the neural interface. The two commandeered a Banshee flown into the hangar by Covenant Special Operations personnel and headed straight for the Pillar of Autumn's crash site.

UNSC capture

Not long after the Master Chief's departure, he alerted Alpha Base of his intent to destroy the ringworld. The relatively large force of Marines; ODSTs and crewmen deemed too important to be put into crygogenic suspension -and thus were not ejected into space, were evacuated on the remaining few Pelican dropships as their home since the 19th was finally abandoned.

Arriving onboard via the hangar bays, the Covenant and Flood had managed to almost kill each other off. With only a few remaining enemies, the UNSC forces managed to quickly gain control over essential systems; notably the control room. They even managed to capture the Prophet of Stewardship who was aboard the vessel at the time. The Prophet sent an emergency rescue request to the fleet, but this request was denied by Supreme Commander Thel 'Vadamee, as the ring's destruction was imminent and the fleet proceeded to move into cover behind Threshold.

The mission commander; Major Antonio Silva, planned to take the ship into orbit and rendezvous with the Master Chief before jumping to Earth. His lieutenant however, disagreed with him. Realizing that the Flood's parasitic nature was too dangerous to let it spread, along with the potential discovery of Earth by the Covenant were the ship to enter UNSC space, she threw an M9 grenade onto an important piece of circuitry. The grenade's detonation severed the link between the command centre and engineering, deactivating the ship's repulsor engines in-atmosphere. The Truth and Reconciliation collapsed onto the plateau it was resting on, resulting in a spectacular explosion of fire and plasma.

List of appearances

• Halo: Combat Evolved (First appearance)
• Halo: The Flood
• Halo: Combat Evolved Anniversary
• Halo Mythos (Mentioned only)