Battle of Reach

"That's it. We've lost. Reach is going to fall."

- Kelly-087

The Battle of Reach was one of the largest and bloodiest engagements in the Human-Covenant War. It was fought between the UNSC Defense Force and the Covenant in August 2552. Though the Covenant had victory, both sides suffered high casualties.

Background
Despite suffering a severe defeat at the Battle of Sigma Octanus IV, the Covenant managed to place a tracking device on the and use it to find Human colony worlds. When the Iroquois returned to Reach, the Human presence, and its extent on that world was disclosed and later revealed to the Covenant fleet. Ironically, the location of Reach was already known to the Covenant; a previously recovered Forerunner artifact indicated Reach held another artifact.

Opening Skirmishes
The approaching Covenant fleet was first detected in slipspace by Remote Scanning Outpost Fermion. The station's commander, Chief Petty Officer McRobb, sent an emergency message to FLEETCOM and ordered self-destruct to prevent the station's data from falling into enemy hands. A few minutes later 314 Covenant ships exited slipspace at the outskirts of the Epsilon Eridani System. Admiral Roland Freemont ordered all ships in the system, as well as those in the Jericho and Tantalus systems, to rendezvous at Reach in preparation for the coming assault. The Covenant moved in on the orbital defenses before the UNSC fleet fully consolidated. 53 late arriving UNSC ships, including the, ran a gauntlet of screening Covenant warships as they attempted to link up with the main fleet. At the beginning of the battle, only about a hundred UNSC ships were readily available to defend Reach.

Space Battle
The main Covenant force moved in on the orbital defenses. The initial salvo of plasma torpedoes was mostly absorbed by three sacrificial refit and repair stations. The defenders returned fire. The Orbital Defense Platforms and a nuclear minefield combined to take down a full third of the Covenant fleet, about a hundred ships, was destroyed in the first human salvo. However, the next Covenant salvo significantly damaged the UNSC fleet and moved in for the kill. They destroyed numerous Super MAC platforms before retreating. A previously unknown warship type, the Covenant Supercruiser, carrying a new weapon, the energy projector, revealed itself destroying the and the  before withdrawing temporarily. The attacking fleet regrouped after deploying Spirit dropships to the surface. As the surviving dropships disgorged thousands of troops, the Covenant fleet began another attack. Some ships made pinpoint slipspace jumps putting them within the UNSC formation. This left them vulnerable for a short time but allowed them to strike the ODPs directly. The supercruiser returned and destroyed the and  from beyond ODP range. The engaged and destroyed the supercruiser.

The UNSC orbital defense was significantly reduced by this point, with the Human ships scattered and being hunted down, but the fatal blow was inflicted ground side as Covenant troops disabled the ODPs by destroying Orbital Defense Generators. Without the ODPs the remaining defenders were overwhelmed.

Ground Battle
Thousands of Covenant landed on Reach in an attempt to destroy the Orbital Defense Generators, and were intercepted by Marine forces who able to defend against the first few waves of Covenant forces while sustaining heavy casualties. The remaining SPARTAN-IIs who were not assigned to Reach Station Gamma were sent to Orbital Defense Generator Facility A-331 to assist in the defense of the station. Unfortunately, their Pelican (Bravo 001, piloted by Flight Officer Mitchell and escorted by the  Longsword Knife 26) was shot down, resulting in the deaths of four Spartans (including Malcolm-059), and some others were wounded as well. Near their crash site, the surviving Spartans discovered the shellshocked remnants of Charlie Company, composed of only four Marines.

Charlie Company had been assigned by Vice Admiral Danforth Whitcomb to find the prototype NOVA Bombs. They were forced to help defend the Orbital Defense Facilities on their way to their objective. Unfortunately, as the Covenant neared the Orbital Defense Generators, someone at HIGHCOM panicked and ordered Longswords to bomb everything within 500 meters, resulting in the destruction of the Covenant, but also catastrophic friendly fire: Charlie Company was reduced to four men, and its leaders: Lieutenant Jake Chapman and  Lieutenant Buckman were killed. The Spartans, after being briefed on the situation by Charlie Company, responded to a distress call from Whitcomb, who requested immediate evacuation. Frederic-104, commander of the Spartans, split the remains of Red Team into four groups: Team Alpha (Frederic-104, Kelly-087, and Joshua-029), which was tasked with eliminating an encampment of 10,000 Covenant and their hovering cruiser (without doing anything that could damage the Orbital Defense Generators), Team Beta, tasked with defense of the Orbital Defense Generators, Team Gamma (Li-008, Anton-044, and Grace-093), ordered to retrieve Whitcomb, and Team Delta (the Charlie Company marines and wounded Spartans including William-043, Isaac-039, and Vinh-030), ordered to secure the Spartans' fallback point at CASTLE Base.

Team Alpha hijacked three Banshees and approached the Covenant encampment (they were ignored by the Grunt Zawaz, who assumed they were Elites on a secret mission) and used Fury Tactical Nuclear Weapons within the shields of the Covenant ship, destroying the encampment and negating the EMP effect that would have disabled the Orbital Defense Generators. Joshua was killed in the process by mass light weapons salvos from the 10,000 Covenant ground forces encamped around the Cruiser. The remaining Spartans of Team Alpha then fell back to CASTLE Base, blasting their way through the remaining Covenant in the area with two commandeered Wraiths. Team Gamma accomplished its mission and fell back to Camp Independence with Whitcomb, where they survived the partial glassing of the planet. Team Delta fell back to CASTLE Base, but in the process lost the remaining Charlie Company marines and every Spartan save for Vinh, Isaac, and William. When the remnants of Team Alpha and Team Delta arrived at CASTLE Base, they found Catherine Halsey there.

Unfortunately, Team Beta was unable to stop the Covenant, who attacked in swarms of thousands. The Orbital Defense Generators were compromised, and the Covenant (after eliminating the powerless, immobile ODPs in geo-synchronous orbit around the planet) began the glassing of Reach.

Mission to Reach Station Gamma
During the space battle, the AI Doppler, controller of Reach Station Gamma, was unable to destroy the vital information onboard the, an ONI prowler involved in Operation: HYPODERMIC. As the Covenant deployed troops to the station, Doppler reported this violation of the Cole Protocol to the Pillar of Autumn before self-destructing himself to keep from further violation. In response, Captain Jacob Keyes sent John-117, Spartan-James, and Linda-058 to the station. They accomplished their task and destroyed the NAV database onboard Reach Station Gamma, but at the cost of James and Linda. While onboard, they rescued some marines onboard the station: Sergeant Major Avery Junior Johnson and Privates Wallace Jenkins, Bisenti, and O'Brien. They then were evacuated by Pelican back to the Pillar of Autumn. Linda-058 was clinically dead, but there was a chance of saving her, so she was placed in a cryo-chamber. John-117 asked Lieutenant Hall to scan for James (who was blown into space) and after they were unable to find him, the Pillar of Autumn made a slipspace jump to Installation 04 pursued by a dozen Covenant ships.

Aftermath
The UNSC lost the second largest military-industrial complex beyond the Sol System and sustained crippling military losses at Reach, losing over a hundred ships, including irreplacable cruisers and supercarriers such as the, , and the. With the Epsilon Eridani System in Covenant hands, there were no further major stop points before Sol. Some estimates put total defeat as a matter of weeks. The Office of Naval Intelligence believed that the location of Sol was compromised and began relocating heavy industry facilities and command centers out of the system.

The Forerunner artifact, a crystal, later escaped Reach and was destroyed, with only a few fragments falling into Covenant hands. .

The AI Cortana commandeered the fleeing to the previously undiscovered fourth Forerunner Halo. While the Battle of Installation 04 was tangential to the main front the containment of the initial Flood outbreak, and the experience gained, was just as critical to the survival of the UNSC.

August 30, 2552:

 * 0447 Hours: The Remote Scanning Outpost Fermion detects incoming Covenant vessels. An emergency message is relayed to FLEETCOM. The Outpost then self-destructs per the Cole Protocol due to an unsecured science library and nearby Covenant forces.


 * 0500 Hours: A fleet of 314 Covenant vessels exits Slipspace on the edge of the system.


 * 0517 Hours: Admiral Roland Freemont (FLEETCOM Sector One commander) issues a general order to all vessels in the Reach, Jericho, and Tantalus systems. All vessels and stations initiate the Cole Protocol and rush to rally point ZULU.


 * 0534 Hours: Covenant vessels make pinpoint Slipspace jumps attempting to destroy any incoming or outgoing human vessels before they can regroup. A Covenant Carrier targets the but is destroyed.


 * 0545 Hours: The Covenant vessels begin a frontal assault. As the Covenant and Human fleets engage above Reach, it seems to be a stalemate, as Covenant ships take out UNSC ships, while the UNSC ships and MAC cannon take out an equal number. The first salvo by the UNSC vessels destroys a third of the remaining Covenant fleet. A previously unknown Covenant warship, called a Supercruiser by Captain Keyes, arrives and destroys several UNSC ships while outside human weapons range.


 * 0558 Hours: Station Gamma Dockmaster AI Doppler is unable to implement the Cole Protocol on the, an ONI prowler docked at Reach Station Gamma, due to measures taken to maintain the secrecy of Operation: HYPODERMIC. Doppler sends priority message to FLEETCOM concerning this violation. Covenant intrusion software detects this oversight, and the Covenant deploy troops to seize the NAV database aboard the Circumference.


 * 0616 Hours: The Spartan soldiers are dispatched from the Pillar of Autumn. SPARTAN-117, SPARTAN-058, and Spartan-James form Blue Team and go aboard the Dock to destroy the Circumference, while the remainder form Red Team and head to the surface of Reach to defend the power generators for the MAC guns. James goes MIA when a needler hits his T-PACK and propels him into space during combat. Blue Team continue through the station, rescuing Sergeant Johnson, Private O'Brien, Private Bisenti, and Private Jenkins from Jackals and Elites.


 * 0620 Hours: The Covenant fleet retreats from the system after deploying dropships. The UNSC fleet fires on the ships, destroying many. Hundreds of dropships land on Reach.


 * 0621 Hours: The boarding craft are landed and the armory is overrun and the Covenant fleet returns to the system. The then Covenant split their 150+ remaining ships. One fleet attacks the UNSC ships, while another takes out the MAC cannons and send in troops to land on Reach. The UNSC try to split their 50+ remaining forces to engage the Covenant, but there are too many platforms to cover and too many casualties. The Supercruiser continues to destroy UNSC ships, allowing the other ships to attack the MAC cannons.


 * 0631 Hours: Red Team is shot down. They have no choice but to jump from the crashing Pelican and make a "hard landing" on the ground. Results in 4 dead and 6 seriously injured.


 * 0637 Hours: The Spartan team on the Circumference mission returns to the Pillar of Autumn. Only SPARTAN-117 and clinically dead SPARTAN-058 make it back, with Sergeant Johnson, Private O'Brien, Private Bisenti, and Private Jenkins.


 * 0647 Hours: The Pillar of Autumn, pursued by a dozen Covenant vessels, retreats from the system, arriving at Installation 04.


 * 0649 Hours: Red Team sets up defenses around ODG Facility A-331.


 * 0711 Hours: SPARTAN-104, SPARTAN-029, and SPARTAN-087 plant a nuclear warhead though the gravity lift in a landing Covenant cruiser, leaving SPARTAN-029 MIA], (presumed KIA ) in the process.


 * 0720 Hours: The Covenant destroy ODG Facility A-331 by aerial bombardment (glassing), though some Spartans escape. The surviving MAC guns are now offline and are quickly destroyed by plasma torpedoes. Remaining UNSC vessels have no choice but to retreat. The Covenant warships are split into two groups: 5 ship teams that hunt down the surviving UNSC vessels and a group of ships that align themselves in formation and begin to glass Reach.

Space Assets

 * Carriers
 * , Supercarrier
 * Cruisers
 * Destroyers
 * Frigates
 * Not known
 * Prowlers
 * Other/Unknown Type
 * Remote Sensing Station Fermion
 * Frigates
 * Not known
 * Prowlers
 * Other/Unknown Type
 * Remote Sensing Station Fermion
 * Not known
 * Prowlers
 * Other/Unknown Type
 * Remote Sensing Station Fermion
 * Other/Unknown Type
 * Remote Sensing Station Fermion
 * Remote Sensing Station Fermion
 * Remote Sensing Station Fermion

Personnel

 * Admiral Roland Freemont
 * Vice Admiral Danforth Whitcomb
 * Captain Jacob Keyes
 * Master Chief Petty Officer John-117
 * Linda-058
 * Kelly-087
 * Spartan-James
 * William-043
 * Frederic-104
 * Malcolm-059
 * Joshua-029
 * SPARTAN-259
 * SPARTAN-320
 * Lieutenant Hall
 * Lieutenant Dominique
 * Lieutenant Aki Hikowa
 * Ensign William Michael Lovell
 * Staff Sergeant Avery Junior Johnson
 * Flight Officer Mitchell
 * Private Wallace A. Jenkins
 * Private Bisenti
 * Private O'Brien
 * Corporal C. Errera
 * Chief Petty Officer McRobb
 * Lieutenant, Junior Grade Bill Streeter
 * Lieutenant, Junior Grade David Brightling

Trivia

 * During the First Battle of Earth, Terrence Hood estimated the size of the Covenant fleet at Reach as 750 ships, not 314. However, it is likely he was using hyperbole to express how much smaller this fleet was when compared to the one that destroyed Reach.
 * The Battle of Reach was one of the final events in the Human/Covenant War that ultimately gave the Covenant an almost insurmountable advantage over the few remaining UNSC forces that were now being recalled to the last Human stronghold, Earth.
 * The Battle of Reach is what caused almost all the events in the Halo games. If the Autumn hadn't arrived at Installation 04 with John-117 aboard, the Covenant could have found, captured, and forced a human to activate it, which would have ended life in the galaxy, or at least life in the range of that Installation or allowed the flood to capture covenant ships and take over the galaxy.
 * The image of the Battle of Reach shows the Pillar of Autumn fleeing, but it depicts the ship as a Marathon-class Cruiser when the PoA is actually a Halcyon-class Cruiser.