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of the greater Ark was the penultimate battle in the Forerunner-Flood war, fought around the greater Ark. The greater Ark, the original Ark installation

installation was Faber. Whereas the greater Ark acted as the Forerunners' final line of defense and command center, the lesser Ark would serve the function of a last

deploy on the Ark. The vast desert on the Ark. John-117 and two ODSTs moving towards a Covenant encampment. ODSTs fighting on the surface of the Ark. The Arbiter

and High Charity's defenses.[citation needed] During 2552, the Second Fleet of Homogeneous Clarity served within the High Charity defense fleet. This section

went to the Ark with the Enduring Conviction. [...] some of those ships are out at other installations that are near the Ark. So there's the Ark, and there's

construction of the Ark or for potential replacement Halo installations. Foundries have been an integral component of both the greater Ark and Lesser Ark installations

The Ark research outpost was one of the few UNSC research bases built on the Ark after Operation: FAR STORM in 2555. The team arrived at the Ark in 2557

The Spawner is a Flood form, created specifically to fight Banished and Ark defenses in 2559. This section needs expansion. You can help Halopedia by expanding

N/A Supply Cost: 300 Power Cost: 200 Cooldown: 150 seconds Ark Defense II: Increases Ark Defense duration and area. Adds two more Aggressor Sentinels to the

to repair the Ark, opening slipspace portals to strip-mine uninhabited planets for the resources and minerals required to repair the Ark. In 2557, a human

research facilities on the Ark. The UNSC's research team was able to repair the Ark from the damage done in the battle by directing the Ark's Retriever Sentinels

were then set loose upon the Ark. With the Sentinel defense network down, the Flood were left unhindered by the Ark's defense systems. Pavium quickly assembled

global defense network. The local defense network only controls sentinels surrounding terminals, while the global defense network controls defenses on a

is around. In Skirmish, Professor Anders can utilize her leader power Ark Defense and Sentinel Beacon to spawn the Aggressors Sentinel to draw the anti-air's

ruthlessly exploited the Ark for new resources and knowledge, especially the energetic meta-materials pumped throughout the Ark in great rivers to keep

greater Ark, including the Ur-Didact, who had been recovered from deep within the Burn by the Master Builder. Soon after their arrival, the Ark came under

Warlord within the Banished who fought against the Flood during the Second Ark Conflict. Both Pavium and Voridus joined the Banished in the post-Covenant

Installation 00, also known as the Ark. The firing mechanisms of these cannons were embedded in the surface of the Ark and fired a blue particle beam upwards

Guardian Forest was to follow on from the level The Ark. As such, the original outlines for the Ark depict a slightly different ending to the one featured

UNSC fleet, including many smaller remaining fleets, and defense forces despite having strong defense was completely obliterated by the overwhelming Covenant

launcher, however, is linked to Sentinel Defense Network on Installation 00. When Voridus disabled the Defense Network, the Sentinels cannot launch from

surface of the Ark, relatively near to the crash site of High Charity. The installation is connected to the defensive network of Sentinels on the Ark. Main article:

Array from the Ark, and Bobby Kodiak was forced by 000 Tragic Solitude, the Monitor of the Ark, to activate the Halo Array from the Ark as a revenge. None

the UNSC Rubicon. When the Rubicon, piloted by 343 Guilty Spark left the Ark, Curator was left behind unable to send out a message due to its one-way datalinks

During the Second Ark Conflict in April 2559, the Swarmlord Colony was tasked by Atriox with uncovering new technologies from the Ark with which to fight

carriers are vital components in the defense of colony worlds. Main article: UNSC Air Force "Provide aerospace defense and conduct space control operations

Shortly thereafter, Offensive Bias apparently took command of the defense of the greater Ark, the last large refuge of the Forerunners and many of their client

reinforcements should be sent through to the Ark to investigate the source of the attack. A fleet of ships soon arrived at the Ark. The UNSC Witness soon located the

went to the Ark with the Enduring Conviction. [...] some of those ships are out at other installations that are near the Ark. So there's the Ark, and there's

the greater Ark. Because of continued use, stress on the portal caused it to collapse, resulting in only one Halo making the journey to the Ark without breaking

Forerunner structure where he managed to reactivate the Sentinel defense network. With the Ark's defenses back online, the Long Shields attacked a massive Proto-Gravemind

formidable foe to anything they recognize as a threat to the Ark. The Foundry at the center of the Ark is populated by Retriever and Assembler Sentinels, who

reaching the lesser Ark in order to stop the IsoDidact from firing the Halo Array and thus shattering the Forerunners' last hope of defense. To delay Mendicant

Forerunner defense station. The destruction of the Flood growth allowed his brother Voridus to enter the facility and reactivate the Forerunner defense network

over the Ark." "Lights Out" - "Jerome must destroy The Banished's portal network controls and cripple Atriox's transport capabilities across the Ark." "From

Closeup of the Halo. Concept art of the Halo over the Ark. Early concept art of the control room, with the Ark in the background. Finalized concept art of the

patrolling throughout UNSC space. System defense fleets, such as the UNSC Home Fleet, the Epsilon Eridani Fleet or Bliss Defense Fleet, are commonly formed to patrol

the Dreadnought entered it and landed on the Ark. It did not take part in the battle, instead flying to the Ark of its own accord. Truth was untroubled by

evolution from the larger Protectors found on the Ark to the smaller Protectors found on Trove. During the Second Ark Conflict, Ellen Anders was able to use her

access to his shipyards and land. Main article: Second Ark Conflict "In the shadows of the Ark lurked a banished legacy of the shattered Covenant: a new

occupation of Installation 00. The HRUNTING/YGGDRASIL Mark II [J] Armor Defense System, colloquially known as the Colossus, is a powered exoskeleton used

Milky Way for eventual reseeding, a flexible environmental system on the Ark was essential. Working similarly to the output nodes of mass-particle replicators

spread across the Ark. However, this threat was ultimately contained thanks to Pavium and Voridus' timely reactivation of the Ark's defense grid, with Sentinels

escaped to the greater Ark with the Master Juridical. There, they agreed to restore the Master Builder in command of Forerunner defense, as his Halos provided

greater Ark. Once there, he remained aboard the Mantle's Approach in orbit over the Ark, where he was briefly visited by the Librarian. When the Ark fell

formidable and fierce defense and Hood's brilliant leadership, especially thanks to multiple defending "Super" MAC-equipped orbital defense platforms, throughout

to the UNSC, who assumed that the excavated complex was itself the Ark, the real Ark, Installation 00, lay beyond the portal. The Flood arrived in Voi shortly

duration, much like Anders' Ark Defense Leader Power. Lure the Abomination to the front of the platform, then activate the defense terminal. This should help

didn't heed Atriox's warnings. Instead, Voridus deactivated the Ark's Sentinel defense network using a terminal near High Charity and burned a hole in

the Mega Turret as a straightforward anti-siege weapon at war camps on the Ark which have the necessary infrastructure and permanence to support their use

imminent Flood attack on the greater Ark. The commanders conferred in a circle within an enormous hologram of the Ark while updates on the installation's

and Mantle's Approach leave towards the greater Ark, now the last bastion of the ecumene. On the greater Ark, Omega Halo is there in anticipation for a Flood

rushed to Earth's defense as a Guardian appeared above Earth, with the Home Fleet and the orbital defense grid scrambling their defenses in the wake of this

Covenant and their hovering cruiser, Team Beta, tasked with defense of the orbital defense generators, Team Gamma, ordered to retrieve Vice Admiral Whitcomb

composed of ships under Sangheili command that broke off from the High Charity defense fleet, including the Second Fleet of Homogeneous Clarity, when the Great

"Where should I cast my cloak?" — A Shroud pilot during the Second Ark Conflict. The Klavbrig Workshop Deceiver, colloquially known as the Shroud, is an

went to the Ark with the Enduring Conviction. [...] some of those ships are out at other installations that are near the Ark. So there's the Ark, and there's

Outbreak on Installation 00 was a large-scale outbreak of the Flood on the Ark in 2559. At the end of the Human-Covenant War, Covenant and Human forces clashed

and sped toward the greater Ark while the Ur-Didact followed on the Mantle's Approach. Main article: Battle of the greater Ark Forced to perform an emergency

agreed to follow Truth to the Ark beyond the portal. The joint Sangheili-UNSC fleet arrived at the Halo Array's control center, Ark Installation 00, on December

Jiralhanae clan leaders on the Ark. When Atriox's personal Lich, Pegoras, had returned through the portal back to the Ark, Let 'Volir engaged in transmission

planet Earth. After the Prophet of Regret discovered the location of the Ark Portal from a Forerunner Luminary unearthed in the aftermath of the Battle

complex Defense Operations, leading combined forces reconstituted from both Warrior-Servants and Builder Security. During the Battle of the greater Ark, remaining

The Controller Sentinel is a Forerunner Sentinel designed for the defense of valuable technology on Forerunner installations. Similar to the roles of the

reconfigured, and after gathering the necessary materials, formed a portal to the Ark. Circa 97,445 BCE, humans were returned to Earth and watched as the Portal

the materials needed to repair the Ark. In response, a joint UNSC-Swords of Sanghelios operation was launched to the Ark to stop the firing sequence. After

integrated energy shielding and warship-grade directed-energy projectors for defense. Assembler Sentinels are predominantly designed and employed for the construction

Regret's forces tried to hold onto and capture the city from the UNSC Defense Force, but failed. Then, his flagship, Solemn Penance, jumped into Slipspace

were then set loose upon the Ark. With the Sentinel defense network down, the Flood were left unhindered by the Ark's defense systems. Pavium quickly assembled

wiping out all sentient life that was not safely outside its range at the Ark. The effects of the firing had lasting effects on the galaxy for the next

discovered the presence of a gateway portal to the Ark on the planet of "Erde-Tyrene". From the Ark, he would be able to activate the Halo Array and commence

the Ark. Awakened from cryo-sleep, Alice, as part of Red Team, was tasked with investigating a UNSC distress signal coming from surface of the Ark. There

Spirit of Fire's Slipspace drive. They awoke twenty-eight years later at the Ark, and went on to participate in several operations against the Banished on

preventing Drifts from stopping them. Solitude was unable to retake control of the Ark on his own and attempted to negotiate having Drifts restore control to him

Control Room and left the Ark with the Halo which was intercepted in slipspace by one of the Created's Guardians. On the Ark, both Cutter and Atriox began

days" had passed from the events of the Ark. Later fiction, however, establishes that the survivors from the Ark returned in December 2552, meaning that

science—the strain caused by this jump caused High Charity to crash into the Ark. At the Ark, the Gravemind led a massive Flood attack on both the Covenant and the

network around the Ark. Anders: "The Ark's portal network. Captain, Atriox has been using the Cartographer to map and take over The Ark's portal network

Banished Scarab commander during the Second Ark Conflict. Many of these Scarabs were deployed by the Banished onto the Ark during the mercenary group's arrival

UNSC Rubicon to investigate the Ark, following a failed attempt to deploy automated probes to the installation. At the Ark, the Rubicon deployed a number

it back into design seed form. Thousands of years later during the Second Ark Conflict in 2559, the Huragok Floats Low But Steady and its Sangheili handler

destroyed our Keyships. A security measure. Without them I cannot reach the Ark. But neither then can the thing." — The Librarian to the Didact. Keyship is

adding up to a total of 480 missiles. 4-12 Point-defense guns function as the last line of defense against single ships and incoming missiles. They are

who defied the Covenant itself!" Cutter: "Here's your notice, Atriox. The Ark is our home now and it's under our protection. Cut it, Isabel. I've heard

toward the destruction of the Forerunner race. He infiltrated the Capital's defense systems, deactivated all present ancillas and security constructs, and held

cleansed if the installation's monitor was still active, but the Ark's fallback defense protocols can only contain the Flood inside High Charity with armored

weapons experts and are designated for combat support, ground assault, defense, recon, boarding, and as well the use of heavy weapons, turrets, and some

where the rings were created: the Ark, along with the location of a device which would generate a slipspace portal to the Ark, where the Covenant believed they

from slipspace and crashes on the Ark. Debris spread from the city-ship helps spread a new Flood infestation on the Ark. The Sangheili and UNSC finish off

Set up a small defense force to move between the two towers. The Kodiaks would do enough damage to the Banished units and your defense force can finish

a temporary path past the star roads laying siege on the greater Ark. The greater Ark and Omega Halo are destroyed by star roads; Faber and most high-ranking

to find and uncover the entrance to the Ark. Instead, they emerged from slipstream space into the heavy defenses of the UNSC Home Fleet, defending humanity's

installation known as the greater Ark, the original Ark used to manufacture the first Halo rings. Aware that the Ark would not stay safe from the Flood

UNSC. Concept art of Munera Platform A7 Orbital defense platform - A series of UNSC planetary defense stations. Cairo Station, a Moncton-class orbital

surface of the Ark following the victory in orbit. The ship then took part in a diversionary bombardment of the shield protecting the Ark's Citadel, the

Installation 00: the Ark, a center from which all the Halo installations could be simultaneously and remotely fired. Sensing that the Ark was the greater threat

the last Covenant forces on the Ark, culminating in the assassination of the Prophet of Truth. The Flood also attack the Ark via the infested High Charity

Among those roles, Longswords most often operate as fleet defense fighters, orbital defense and deep space interceptors, or as strike fighters, among other

greater Ark along with the remaining Forerunner population. While small pockets of survivors still existed throughout the ecumene, the greater Ark was now

After landing on the Ark, 343 Guilty Spark helps lead the Master Chief and UNSC forces to the Ark's Cartographer, the map room of the Ark, to locate the Control