Reach was a human colony world in the Epsilon Eridani system, located within the Inner colonies. At 10.5 light years from the Sol system, it is located at Earth's metaphorical doorstep. Reach is the fourth largest planet in the Epsilon Eridani system, and second closest to the star Epsilon Eridani.
Reach was the largest and most active shipyard of the UNSC prior to the Fall. Ships like the Stalwart-class light frigate were built there.
Ship breaking was a very lucrative business as there was an on ground facility and orbital locations for dismantling ships of all kinds. Metal taken from these ships were sent to nearby metal working refineries where they were melted down and could be recast and reformed for any other products that could be made from metal.
It was originally colonized in 2362, by the Odyssey for its rich titanium deposits. The mines all over the planet, ran thousands of meters deep. ONI's CASTLE Base was located in one of these mines underneath Menachite Mountain. The Office of Naval Intelligence commandeered the mine after it breached a secret complex beneath Reach's surface containing a Forerunner artifact that was highly desired by the Covenant. The fact that this artifact was so valuable to them is perhaps the main reason anyone survived the aftermath of the Fall of Reach at all, as the Covenant were afraid of destroying it. This facility was also the birthplace of the legendary SPARTAN-II Program.
The Spartan-IIs were trained and housed on Reach. It was said by Fred-104 that Reach was their home, and every Spartan-II would fight to the death to defend her. It was hinted that Reach was more important to the Spartans than Earth, the home world of humanity.
The Fall of Reach
Reach's darkest hour was near the close of the Human-Covenant war in the summer of 2552. The Covenant discovered the location of Reach from a Forerunner artifact recovered during the Battle of Sigma Octanus IV. That artifact disclosed its locality, as Reach was the location of yet another artifact. Coincidentally, the Human presence on Reach was revealed when the destroyer UNSC Iroquois returned to Reach, unaware that a Covenant spy drone was attached to her hull near the engines. At the same time, Reach was secretly discovered by the Fleet of Valiant Prudence.
UNSC Pillar of Autumn with a contingent of SPARTAN-IIs was about to embark on a mission when a signal ordered them to recall to Reach to defend against a massive Covenant attack. Master Chief Petty Officer John-117 ordered the majority of the Spartans to the planet's surface to protect the generators for the Orbital Defense Platforms while he and two other Spartans boarded Reach Station Gamma to secure an unprotected NAV database aboard the ONI corvette UNSC Circumference.
The battle was a disaster for the numerically-inferior UNSC fleet, despite the Super MAC Guns, resulting in the planet's destruction by means of glassing. CASTLE base was destroyed after the planet's fall and the Covenant began searching for a Forerunner crystal. When UNSC forces finally abandoned the planet, a small Covenant occupation fleet remained in the system.
Halo is a military science fiction first-person shooter video game franchise managed and developed by 343 Industries, a subsidiary of Xbox Game Studios. Halo was originally developed by Bungie Studios. The series centers on an interstellar war between humanity and an alliance of aliens known as the Covenant.
The games in the series are critically acclaimed, with the original considered the Xbox's "killer app".