Blue Team

Blue Team is a combat sub-unit within the larger SPARTAN-II Division of the UNSC Naval Special Warfare Command, and is a semi-stable group consisting of four members. It has been led by John-117 for much of its combat activities during the Human-Covenant war, though after John's disappearance at New Mombasa the role of leader was taken up by Frederic-104. SPARTAN-III personnel were absorbed into the team during the Battle of Onyx.

Introduction
Blue Team was made famous and renowned because it was the designation for a prestigious SPARTAN-II-oriented squad whose roster included John-117. But because of the ambiguity of this name, "Blue Team" may be used as the plausible callsign for other UNSC military elements. This, however, has not been definitively proven. Blue Team has participated in hundreds of combat missions against a plethora of different foes, including, but not limited to: the Eridanus Rebels, Covenant forces, and Forerunner constructs.

Known Members
After its conception in 2519, Blue Team usually consisted of three or four members. The team was originally comprised of John-117, Samuel-034 and Kelly-087. After Sam's death on a Covenant vessel in the Chi Ceti system (and the addition of Fred-104), his spot remained vacant until John reluctantly filled it with Kurt-051 in 2531.

The unit's roster frequently changed for various combat operations, changing both members and size. During the Battle of Earth, Blue Team was reformed from the surviving SPARTANs on Earth, with the new roster being Frederic-104, Linda-058 and William-043, though later, during the events on and inside Onyx, the team lost William and increased in numbers, with Kelly-087 rejoining, as well as Lucy-B091, Tom-B292, Ash-G099, Mark-G313 and Olivia-G291 joining the team.

Spartan-IIs
 * Samuel-034 (2517-2525) (KIA marked as MIA)
 * James-005 (2552) (MIA probably KIA)
 * Anton-044 (KIA marked as MIA)
 * Li-008 (KIA marked as MIA)
 * Grace-093 (KIA marked as MIA)
 * William-043 (KIA marked as MIA)
 * Kurt-051 (KIA marked as MIA)
 * Linda-058 (Active as of 2557)
 * Kelly-087 (Active as of 2557)
 * Frederic-104 (2552) (Active as of 2557)
 * John-117 (2517 - 2552, leader) (AWOL as of 2557)

Spartan-IIIs
 * Lucy-B091
 * Tom-B292
 * Ash-G099
 * Mark-G313
 * Olivia-G291

Training
Prior to the Human-Covenant War the SPARTAN-IIs were deployed onto the battlefield as shock infantry, Blue Team often exercised versus fellow SPARTAN-II Green Team, led by SPARTAN-051 (Kurt), and often lost because of Kurt's superior "sixth sense". Blue Team was formed around John-117, Kelly-087, and Sam-034, who met on their first day of induction into the SPARTAN-II program.

Assault on Eridanus Secundus
In the first UNSC military operation where the SPARTAN-II's were put to the test after their intensive training, Blue Team was sent to infiltrate the Eridanus Rebel space station Eridanus secundus in the Eridanus Asteroid Belt. Blue Team stowed aboard a, the Laden, and managed to sneak aboard Jefferson. Their objective was to capture the rebel leader ex-Colonel Robert Watts, a UNSC turncoat.

With minimal attention, Blue Team managed to kill several of Watt's guards and subdue him with polypseudomorphine, a sedative. Then Blue Team hijacked a rebel Pelican Dropship and Sam-034 set and detonated explosive charges in the rebel base's hangar, making good their escape, but at the cost of dozens of civilians' lives. Blue Team was successful in its objective.

Raid on Camp New Hope
By 2531 Blue Team had carved out a reputation for itself amongst Insurrectionist forces, particularly the United Rebel Front. The then four-man team disrupted URF operations including Station Jefferson, the destroyer URF Origami and a saboteur cell on Reach, as well as an incident in Micronesia, and a high-explosives manufacturing facility at an unspecified location. In response the rebels gathered together three FENRIS Nuclear Warheads at Camp New Hope in a way so sloppy that the Office of Naval Intelligence could not help but notice, then contacted the UNSC and offered to trade the nukes in exchange for medicines for their people suffering from Boren's Syndrome. They then set a trap for Blue Team, whom they anticipated would be sent. They successfully ambushed John, Fred, Kelly and Linda using an Antigravity Plate, however were unaware of the presence of Kurt, a new addition to the team, who had avoided the trap. Kurt was able to free the other members of Blue Team and they then retreated from the camp with the recovered warheads. Rebel leader General Howard Graves was killed in the process.

Battle of Sigma Octanus IV
After the city of Côte d'Azur on Sigma Octanus IV came under attack from Covenant forces, John 117 led Blue Team under the city, planting a HAVOK Nuclear Warhead before moving into a Covenant controlled building, and facing Hunters for the first time. After retreating to a Pelican for evac, John-117 detonated the HAVOK Nuclear Warhead, killing all Covenant in the city.

Blue Team was not always necessarily comprised of these members at all. John picked James and Linda to be on his team and sent the rest to the surface of Reach as part of Red. Spartan IIIs Ash-G099, Mark-G313, and Olivia-G291 joined Kelly-087, Fred-104, and Linda-058 as members of Blue Team.

Battle of Reach
During the Battle of Reach, the SPARTAN-II company was divided into two teams: Red Team and Blue Team. Blue Team was tasked with defending an orbital space station's navigational data that could possibly lead the Covenant to Earth - which would be devastating to the UNSC. Red Team, far larger than Blue Team, was sent to the planet surface of Reach to defend the power generators that powered the Orbital Defense Platforms.

Blue Team consisted of SPARTAN-117 (Blue One), SPARTAN-005 (Blue Two), and SPARTAN-058 (Blue Three). Blue Team departed from the in a Pelican Dropship and crash-landed on the space station shortly before waves of Jackal Rangers and Elites landed. On maneuvers, Blue Two was shot at with crystalline needler rounds that penetrated the propellant module on the back of his armor that allowed him to maneuver in zero-g. With thruster wash billowing everywhere, Blue Two was blown into space, unable to control his trajectory.

However, Blue One (John) and Blue Three (Linda) were able to infiltrate the locked-down space station, and with the help of Staff Sergeant Avery J. Johnson and several other Marines, destroy the navigational data so that the Covenant would be unable to find and destroy Earth. However, during extraction, Blue Three was shot in the back with an overcharged Plasma Pistol, and fell into a deep coma, Blue One (John 117) and the Marine fireteam survived.

Battle of Earth
Shortly after John-117's disappearance after the Mombasa Slispace Event, Blue Team was deployed to help defend Earth during the span of two weeks, while In Amber Clad was busy pursuing the Prophet of Regret. Blue Team conducted operations including numerous operations in orbit around Earth, stopping a Covenant invasion on Mount Erebus in Antarctica with a HAVOK tactical nuke, and stopping Covenant forces on the sea floor off of the Yucatan Peninsula. Following these ops, they were deployed to the Centennial Orbital Elevator (also known as Tallo Negro del Maiz) in Havana, Cuba to stop Covenant forces that had gathered around the orbital elevator. They then stopped the Covenant forces, who had captured multiple nuclear warheads, before they could ascend the orbital elevator. The Spartans then ascended the orbital elevator themselves, and in the process destroyed one of the Covenant capital ships at the top of the elevator. The three Spartans then left the battle in another Covenant capital ship called the Bloodied Spirit under orders by Fleet Admiral Hood to aid Catherine Halsey on Onyx.

Battle of Onyx
During the Battle of Onyx, Blue Team fought alongside with Team Saber against the Onyx Sentinels and the Swords of Sanghelios that had arrived. Upon arriving at the Battle of Onyx, they were reunited with Kelly-087, Dr. Halsey, Senior Chief Petty Officer Mendez, and Kurt-051 (who they thought had been dead for quite some time). However during the course of the battle Will, Kurt, and a number of SPARTAN-IIIs were killed by the Sentinels and Covenant forces. The rest of Blue Team, along with the remaining SPARTAN-IIIs, CPO Mendez, and Dr. Halsey entered the Dyson Sphere.

Blue Team, CPO Mendez, and Dr. Halsey, were retrieved from the Dyson Sphere in 2553 by Kilo-Five. Blue Team was offered the chance to become apart of the SPARTAN-IV Program.

Mission to Installation 03
On July 25, 2557, Admiral Terrence Hood ordered Blue Team to investigate the disappearance of Team Black and a science team on the surface of Installation 03. When they discovered that both teams were killed off, they followed a recently opened portal in the Composer's Abyss, on the Installation, to the Composer's Forge. There they discovered that there were multiple Composers and that the Ur-Didact had survived. They confronted him and were nearly killed but 859 Static Carillon saved them.

John-117 had acquired the index from the Didact during the ambush and followed him to the control room with Carillon, while the rest of the SPARTANs waited in their Longsword. While there, John disabled the ring's safety limits and gave over the index to Carillon. Carillon then preceded to detach that section of the ring, letting it burn up in the planet below. Carillon teleported John-117 to the Longsword and let the Didact burn up. Following their return to Earth, though Admiral Hood asked John-117 and his team to take some shore leave, the Master Chief told them that they're cleared for more missions.

Appearances

 * Halo: The Fall of Reach 
 * Halo: First Strike
 * Halo: Ghosts of Onyx
 * Halo: Glasslands
 * Halo: Escalation
 * Halo 4: Forward Unto Dawn
 * Halo 5: Guardians