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     In General 

United Nations Space Command (UNSC)

The primary military, exploratory, and scientific organization of the Unified Earth Government (UEG). The UNSC headed the effort to protect humanity from the Covenant and most major human characters belong to it.

  • Civil War: Was beginning to tear itself apart before the Covenant gave humanity a reason to unite.
  • Enemy Mine: With the Insurrectionists in a number of battles against the Covenant, such as Metisette and Psi Serpentis, and with the Elite-led Separatists against the Covenant Loyalists during the war's last year.
    • There were also some temporary Human-Covenant alliances from before the Great Schism, as shown in Halo: Evolutions and Halo: Blood Line, but those all broke apart as soon as one side completed their immediate objective.
  • The Federation: Though somewhat more authoritarian than the norm, especially once the war with the Covenant starts, which resulted in the UNSC taking emergency powers and overriding the UEG's rule. Power has technically been ceded back to the UEG after the war, but the UNSC is still the dominant authority in practice.
  • Humans Are Warriors: It's in large part due to the Humans' guts and will that they did so well and survived so long in the Human-Covenant War. Many Covenant warriors (especially the Elites) lampshade it, and some even believe they've earned the right to join the Covenant.
  • Kinetic Weapons Are Just Better: Explosively or magnetically propelled kinetic weaponry, along with tactical explosives and the occasional nuke, form the mainstay of UNSC weaponry both on the ground and in space. The only energy weapon designs they are known to possess are the shoulder-mounted Spartan Laser, the Prowler's pulse laser turrets, and a prototype plasma mortar tank that was deployed only rarely. Nevertheless, despite their overall technological inferiority, some of the humans' ballistic weapons were actually somewhat more effective than their energy-based Covenant counterparts.
    • Post-war, much of the remaining gap between human ballistic weaponry and Covenant energy weapons has been closed, at the very least. Additionally, the UNSC has experimenting with heavier versions of the Spartan Laser to put on its vehicles, with the Infinity's Pelicans having already successfully made the transition.
  • The Napoleon: In Silentium, Riser (a Florian) remarks to a Forerunner that he takes charge not despite of his size, but "because of it". The implications of such can be applied to humanity as a whole.
  • Proud Warrior Race Guys: Well, you can say that. The Humans were the first species since the Lekgolo to give the Covenant a real fight, holding out long enough for the Covenant to destroy themselves. Post-war, they actually eclipse most of the remaining Covenant factions in strength.
  • Remember the Alamo: Common battle cries for the UNSC are "Remember Harvest!" or "Remember Reach!".
  • Rock Beats Laser: Although UNSC technology is explicitly stated to have been mostly inferior to Covenant tech during the Human-Covenant war, the humans made very good use of what they had.
    • This can be seen especially in space; while a single Covenant ship was worth at least three UNSC ships in a straight fight, clever tactics and positioning allowed the UNSC Navy to often hold its own even against overwhelming numbers. Well, that and their Magnetic Accelerator Cannons and nuclear warheads (the heaviest variants capable of one-shotting even shielded Covenant ships).
  • Theme Naming: UNSC ground vehicles are named after animals, aerial vehicles are named after flying animals, and fighters are named after bladed weapons.
    • Also, the Reporting Names they give to Covenant vehicles are all mythological monsters.
  • Took a Level in Badass: Following the end of the Human-Covenant War, the UNSC finally got a chance to implement new and improved technology that was still in the pipeline at the time the war ended. The most prominent examples would be the commissioning of their new flagship, the 5-kilometer long Infinity, along with the proliferation of shield technology, now seen on all starships, fighters, ground mechs, and, naturally, the powered armor used by the new SPARTAN-IV corps.
  • The War of Earthly Aggression: Before the Human-Covenant war, the UNSC ran the risk of splintering under the weight of rebellions.
  • United Nations Is a Superpower: In SPACE!!!

Army Troopers

     In General 


The branch of the UNSC military primarily responsible for groundside defense and occupation.

  • All the Other Reindeer: In Halo: Glasslands, it's noted that for some unknown reason, no Army officers were even invited to attend the ceremony for John-117.
  • Badass Army: UNSC High Command may generally prefer the Marines over the Army to be the spearhead of a campaign, but the latter has a pretty distinguished combat record themselves. Even 1-v-1 and in-game, a properly-equipped trooper can often hold their own against the Covenant's best.
  • The Engineer: One of their main tasks is civil engineering (specifically, the projects that also have military applications).
  • Hufflepuff House: Despite providing the majority of the actual soldiers in most UNSC ground campaigns, they're the second least seen branch of the UNSC armed forces (next to the Air Force) in Halo media, taking five games to finally show up in a campaign. Supplementary Halo 4 materials and Spartan Ops mention that they're also serving alongside the Infinity on Requiem, but we never actually see them in in-game.
  • Ranger: Like their real-life counterparts, UNSC Army Rangers are skilled light infantry specializing in mobility and stealth; during the Human-Covenant War, they were primarily deployed as guerillas.
  • Red Shirt Army: In most of Halo: Reach.
  • We Will Wear Armor in the Future: Reasonably effective against bullets and shrapnel, less so against plasma.

     COL. Urban Holland 

Colonel Urban Holland
Homeworld: Unknown
Birthdate: Unknown
Debuted in: Halo: Reach
Voiced by: Pat Duke

"The Office of Naval Intelligence believes deployment of a Spartan team is a gross misallocation of valuable resources... I disagree."

Noble Team's commanding officer and the head of Special Warfare Group Three.

  • Mission Control: For Noble Team.
  • Reasonable Authority Figure: He may be stern, but he's willing to stick his neck out to back Noble Team's crazier ideas if he thinks that's the best option they have. He's also the one who decided that the Spartans of Noble should all be warrant and commissioned officers, ensuring that less reasonable authority figures wouldn't have the rank to subvert their missions.
  • Voice with an Internet Connection: In fact, despite being a relatively important supporting character in Halo: Reach, he doesn't even have a character model; the only thing we see of him are a few brief glimpses of monitors showing the image above.
  • What Happened to the Mouse?: He last contacts Noble Team during the penultimate level of Reach, and his fate has yet to be revealed in any Expanded Universe works.

     SGM. Duvall 

Sergeant Major Duvall
Homeworld: Unknown
Birthdate: Unknown
Debuted in: Halo: Reach

"Awful day so far... Let's keep it from getting any worse, huh?"

A army NCO helping to coordinate the evacuation of New Alexandria during the Fall of Reach. He assists Spartan-B312 during the battle.

  • Gameplay Ally Immortality: Notable for being one of the few minor characters to benefit from this.
  • Mission Control: Is primarily seen/heard coordinating evacuation efforts over the radio. He also takes on this role for Six towards the end of "Exodus" (despite being technically lower-ranked). That said, you can bring him into battle if you can coax him onto a Warthog.
  • Nice Hat: Like UNSC sergeants in general.
  • No Name Given: His given name is unknown.
  • Sergeant Rock: Well, he does his best, anyways.
  • You Are in Command Now: Implied, given that under somewhat better circumstances, it likely would have been a commissioned officer taking his role in coordinating the evacuation.

     SGT. Holly Tanaka 

Sergeant Holly Tanaka

See the Halo Spartan IV Program page for more details.

Colonial Militia

     In General 

Colonial Militia

Besides its regular military, the UNSC also oversees the Colonial Militia, which are locally-based defense forces present on most colony planets, with each world's branch recruiting primarily from its own population. Though their official jobs are simply disaster relief and basic internal security, many Colonial Militias are in practice paramilitaries capable of sustained counter-insurgency operations.

  • Break Out the Museum Piece: Are generally not given the most up-to-date equipment, though some militias find ways to "creatively" acquire better gear.
  • Home Guard: They serve as a colony's primary defense force when UNSC regulars are not around. As they're typically trained by UNSC regulars, they can be reasonably effective when properly led.
  • Ragtag Bunch of Misfits: Colonial Militia personnel can include everyone from aging retired cops to kids too green to join the regular UNSC military.
  • Redshirt Army: Even by the standards of the rest of the UNSC, they tend have a pretty short lifespan when fighting against Covenant.
  • The Scrounger: If the Reach militiamen encountered in Halo: Reach are any indication, Colonial Militias can make up for any equipment shortfall by employing people who can surreptitiously siphon off weapons, rations, etc. from the UNSC proper.



Homeworld: Harvest
Birthdate: Unknown

A gifted sharpshooter, Forsell was a new recruit of Harvest's Colonial Militia when the Covenant attacked in 2525.

  • Bash Brothers: Develops a close friendship with Jenkins, and the two work together so well that they almost take down Johnson during training.
  • Big Eater: When Jenkins lets him take whatever he wants from Jenkins's MRE, Forsell ends up taking everything.
  • The Big Guy: The biggest and physically strongest of the militia recruits.
  • Combat Pragmatist: During a training exercise, he wins against Stisen by knocking him off the beam while Stisen's distracted by something Byrne just said.
  • Doomed Hometown: Since Harvest is the first human colony to be glassed.
  • Farm Boy: Comes from a relatively poor farming family.
  • Long-Range Fighter: Despite his brawny appearance, he's a crack shot.
  • The Quiet One: Described as being rather quiet.
  • Smarter Than You Look: Jenkins initially assumes he's kind of dim, but Forsell is the one who teaches Jenkins various techniques to help him aim properly.
  • Target Spotter: Becomes Jenkins's spotter in the militia.
  • What Happened to the Mouse?: Despite being Jenkins's last remaining friend at the end of Halo: Contact Harvest, Forsell's fate during the war remains unknown; we don't even know if he took up Johnson's offer to join the Marine Corps.

     Wallace Jenkins 

Wallace A. Jenkins

See the Halo UNSC Marines And ODST page for more details.


Corbulo Military Academy

     In General 

Corbulo Academy of Military Science

Located on Circinius IV, the Corbulo Academy of Military Science (CAMS) is one of the premier Officer Candidate Schools in the UNSC, with many of its cadets being the children of the elite of UNSC society.

  • Boarding School: With its cadets all being about fifteen to eighteen years old.
  • Elaborate University High: Structured like a university despite its students being around high school age. It even has its own Space Elevator.
  • Military School: One of the most renowned in the UNSC.
  • My Country, Right or Wrong: The school's motto is taken from a quote said by the school's namesake as he committed suicide on the orders of Emperor Nero, with superintendent General Black saying that Corbulo represented the "honor, valor, and allegiance" expected of cadets. Indeed, Black believed that defeating the Insurrection would require instilling colony kids (including many of Corbulo's own cadets) with a rigorously pro-UEG education.
  • Named After Somebody Famous: Roman general Gnaeus Domitius Corbulo.
  • Pretentious Latin Motto: Which roughly translates to "I am worthy".

     Gen. Daniel Black 

General Daniel Black
Homeworld: Unknown
Birthdate: Unknown
Portrayed by: Mike Dopud

"Send me you sons, your daughters. And I will transform their bodies, I will discipline their minds, and I will rid their hearts of fear. Make no mistake. This is a call to arms. The enemy is out there waiting, in the shadows of those stars, to slaughter our future. So I ask you: What will your legacy be? Send me the next generation of soldiers and I will give you the next generation of heroes."

The superintendent of Corbulo Academy of Military Science in the year 2526, Black is a decorated Marine with a hardline attitude towards the Insurrection.

  • Character Death: Lasky finds his body in the driver's seat of a Warthog the cadets then use to escape.
  • Cigar Chomper: Like many UNSC officers, he seems to have a fondness for cigars.
  • Four-Star Badass: Earned his stripes fighting against Insurrectionists during Operation: TREBUCHET.
  • Secret Keeper: Being a high-ranking officer in charge of a major UNSC facility near the edge of UNSC space he is one of the handful of officers informed about the Covenant during the early months of the war. He kept news of the aliens from the staff and students while instituting communications blackouts to prevent leaks.
  • Undying Loyalty: To the UNSC. He views the military as the only thing keeping order among humanity and views the insurrectionists as selfish and violent people who needed to be crushed.
  • Veteran Instructor: He is a highly decorated veteran and is responsible for teaching the next generation of UNSC officers, a duty he takes very seriously. Black is noted to personally intervene when a training squad is not performing as well as expected in order to solve whatever issues are causing the problem.

     Col. Kennedy Mehaffey 

Colonel Kennedy Lynn "Icepick" Mehaffey
Homeworld: Desdoron V
Birthdate: Unknown
Portrayed by: Ayelet Zurer

A professor at the Corbulo Academy of Military Science in 2526, she served with Thomas Lasky's mother as an ODST before taking her position at the academy.

  • Action Girl: As a former ODST, she's still able to fight alongside her men when the Covenant invade.
  • Character Death: Gets shot in the throat with a needler while trying to protect the cadets.
  • Colonel Badass: She may no longer be fighting on the frontlines, but she is still plenty badass.
  • Cruel and Unusual Death: Considering how Needler guns work, even without a supercombination explosion.
  • Knife Nut: Part of the reason why she got her nickname back when she was still an active combatant. Mahaffey preferred to engage in close-quarters combat with her knife.
  • The Mentor: Tries to be one to Lasky, and succeeds to some degree.
  • Mentor Occupational Hazard: Dies in the early stages of the Covenant invasion.
  • Rugged Scar: Has a scar next to her right eye.
  • She Is the King: She's referred to as "sir", like all the female officers at Corbulo.
  • Shrouded in Myth: Said scar was a source of many urban legends among Corbulo's students during her tenure, due to the fact that she was famously transferred off the frontlines "without a scratch" from combat.
  • Veteran Instructor: Like General Black, she is a highly-decorated soldier who takes a very hands-on role in training and mentoring recruits.

     April Orenski 

Officer Cadet April Orenski (45353-09738-AO)
Homeworld: Harvest
Birthdate: June 18, 2508
Portrayed by: Enisha Brewster

A senior cadet at the Corbulo Academy of Military Science in 2526. She is the leader of Hastati Squad.

  • Black Dude Dies First: Averted. Despite being the only black character with a substantial role in Forward Unto Dawn, she not only avoids being the first major character killed, but ends up being one of only three Corbulo cadets who survive the Covenant attack.
  • Drill Sergeant Nasty: Definitely a hardass; at one point she even disciplines Lasky by shooting him point-blank with stun rounds.
  • Jerk with a Heart of Gold: Despite the above, she does care about her squad.
  • The Leader: In charge of maintain discipline of Hastati Squad, while either Lasky or Vickers has command in training exercises which she oversees. She's definitely out of her depth during the Covenant attack, but she does about as well as a cadet with no field experience could in her situation.
  • Military Brat: Daughter of two high-ranking officers.
  • Not So Stoic: Despite her stoic reputation, she's clearly freaked out when the Covenant invade Corbulo Academy.
  • She Is the King: Like Col. Maheffey, referred to as "sir".
  • The Stoic: Lasky and Sully refer to her as "the Robot".

     Chyler Silva 

Officer Cadet Chyler Silva
Homeworld: Cygnus
Birthdate: c. 2510
Portrayed by: Anna Popplewell

A freshman cadet at the Corbulo Academy of Military Science in 2526, serving in Hastati Squad. She spent much of her youth surrounded by Insurrectionist violence on Mamore, and believes they have to be stopped, a view which clashes with her friend Lasky's more tolerant opinion towards them.

  • Action Girl: Possibly Hastati's most talented soldier, being the only member who's able to actually kill Covenant soldiers.
  • Died in Your Arms Tonight: In Lasky's.
  • Instant Death Bullet: Averted. She gets hit with a needle shard in the stomach, and doesn't even notice it until the action calms down. Her death is pretty slow and painful.
  • Friendly Sniper: She's one of the friendliest cadets, and is one of the best shots in Hastati Squad. She even wields a Covenant carbine in Part 4.
  • Improbable Aiming Skills: She's only a cadet, but she manages to pick off a Jackal sniper while using a carbine for the first time, and takes down at least two shield-wielding Jackals while firing an assault rifle from a moving Warthog.
  • The Lost Lenore: For Lasky, who has kept her dog tags over thirty years after her death.
  • Military Brat: Her parents served and died in the UNSC Defense Force.
  • Nice Girl: One of the few people who is actually nice to Lasky even before he shows his commanding skills, and one of only two cadets who are friends with him.
  • Parental Abandonment: Due to her parents dying in the military.
  • Take a Moment to Catch Your Death: After being hit by a single Needler shard while Lasky is driving the Warthog to try to escape the planet, she only notices it after they stop for the moment. However, not quite as sudden as other examples, as she has a death sequence that allows her some last actions.

     Michael Sullivan 

Commander Michael "Sully" Sullivan (26582-72839-MS)
Homeworld: Emerald Cove
Birthdate: September 3, 2510
Portrayed and voiced by: Masam Holden (Halo 4: Forward Unto Dawn), Jerry Trainor (HUNT the TRUTH)

A freshman cadet at the Corbulo Academy of Military Science in 2526, Sullivan was one of the few members of Hastati Squad to be friends with Lasky. He is skilled at hacking, to the point of being able to access even restricted ONI files.

Following graduation, he joined the UNSC Navy, and was eventually recruited by the Office of Naval Intelligence. After the Human-Covenant war ends, he becomes ONI's Senior Communications Director.

  • Actual Pacifist: States in his cadet interview that he's unsure about whether he could actually kill another human, with plans to become a researcher like his father instead. However, this seems to have fully worn off by the time he joined ONI.
  • Became Their Own Antithesis: Goes from being a laid-back Playful Hacker to a ruthless cog in ONI's propaganda machine.
  • Break the Cutie: Sullivan was easily the friendliest and most laid-back of Hastati Squad. By the end of Halo 4: Forward Unto Dawn, his roommate and two other squadmates have been killed by the Covenant, who've also massacred most of the rest of the academy, and he himself gets nailed in the leg with a needle round.
  • Brilliant, but Lazy: His laid-back attitude led to his father sending him to Corbulo for structure. Even then, he was not too concerned about performing poorly in training exercises, spending considerable effort to avoid any real hardships.
  • Cynicism Catalyst: The events of Forward Unto Dawn played a major role regarding who he became by the time of Hunt the Truth.
  • Disappeared Dad: Mentions in his cadet interview that his father was a researcher for the UNSC, with the implication that he died sometime before the start of Forward Unto Dawn, which serves as part of Sullivan's motivation for continuing to attend Corbulo, despite having no real ill will against the Innies.
    • Additionally, supplementary information mentions that he and his siblings were primarily raised by their mother, due to their busy father being all but absent from their lives (except for being the parent who sent Michael to Corbulo in the first place).
  • Jerkass Has a Point: Maya is forced to admit the validity of his point that releasing all the intel could possibly do more harm than good, though she still thinks he's an asshole.
  • Nice Guy: As a cadet at Corbulo.
  • Pet the Dog: Reveals in Season 2 of Hunt the Truth that as horrible as Benjamin's Giraud's situation currently is under ONI custody, it was even worse before he decided to step in.
  • Playful Hacker: At Corbulo, he noticed that ONI was hiding something from the cadets and decided to hack into restricted files to find out what.
    • The Cracker: Once he starts to dig deeper, he's less playful about it. Still a heroic example, though less so after he himself joins ONI.
  • Plucky Comic Relief: Is able to keep up some semblance of humor even during the Covenant invasion.
  • Propaganda Machine: Becomes a member of ONI's Section Two after the war. Especially ironic when you consider that one of the first things he did as a cadet was to hack into files that ONI didn't want him to see.
  • The Smart Guy: As a cadet, he not only managed to figure out that ONI was hiding some very big secrets, but could also hack their files. Note that this is an organization that prides itself on its paranoid security measures, including having its files guarded by frickin' smart AIs. Not surprisingly, he originally hoped to become a UNSC researcher, like his father was. However, he ended up putting his technological and analytical talents to use as an ONI agent instead.
  • The Spook: Particularly during the war, when he was part of ONI's Section One.
  • Took a Level in Jerkass:
    • By the time of Hunt The Truth, it's clear that the class clown of Corbulo Academy has become quite cold, with whatever is left of his old self being just a facade.
    • He's also pretty dismissive of Agent Maya Sankar, more or less brushing off her warnings about the unrest in the Outer Colonies.
  • Unscrupulous Hero: When he was still with the regular Navy, his extreme ruthlessness unnerved even his own superiors... and led to his recruitment by ONI.
  • Used to Be a Sweet Kid: He was definitely the most easygoing cadet among Hastati Squad in 2526, but this is no longer the case by 2558.

     Walter Vickers 

Officer Cadet Walter Vickers
Homeworld: Boundary
Birthdate: c. 2510
Portrayed by: Iain Belcher

A freshman cadet at the Corbulo Academy of Military Science in 2526. He took over as team leader of Hastati Squad after Lasky was demoted. He hates the Insurrection and dislikes Lasky for his sympathetic views towards them, as well as for his questioning of his leadership ability.

  • The Big Guy: The fittest member of Hastati.
  • Heroic Sacrifice: He charges at the Elite to try and give the other cadets a chance to escape, and is shot in the chest for his efforts.
  • I'm Not Here to Make Friends: States in his cadet interview that being at Corbulo is not about making friends, but learning to be the best soldier possible, which suits him just fine.
  • Jerkass: Insults Lasky by making a crack about his dead brother as revenge for Lasky's behavior in training exercises. While he has good reason to be pissed at Lasky, that crossed a line.
  • Jerk with a Heart of Gold: After Lasky comes up with a plan that wins Hastati squad the final exercise of the semester, Vickers gives him a respectful nod. He also attempts to give the rest of Hastati a chance to escape by charging an Elite by himself.
  • The Leader: He is the team leader of Hastati Squad during at least one of their exercises.
  • Senseless Sacrifice: The other cadets fail to run. They are saved by the Master Chief seconds later, which suggests that everyone, including him, might've lived had Vickers kept quiet.

     Dimah Tchakova 

Officer Cadet Dimah Tchakova
Homeworld: Reach
Birthdate: c. 2510
Portrayed by: Katerina Katelieva

A freshman cadet at the Corbulo Academy of Military Science in 2526. Her mother is the secretary of FLEETCOM and her father is a high ranking intelligence officer, so she considers her military career to be something she was born to do. She is friends with fellow Hastati squadmate JJ.

  • By-The-Book Soldier: When Lasky complains that Vickers's orders during an exercise didn't make sense, she told him that it didn't matter and that he should have followed them anyway. Dimah does agree not to report Sully for hacking into secure files though.
  • Death by Irony: She uses her mother's position to be one of the first people evacuated when the academy comes under attack by the Covenant, but dies when the Covenant ships destroy the orbital elevator as she is riding it up.
  • Girls Love Stuffed Animals: Has a stuffed toy among her personal possessions at Corbulo. In her case, it's less about femininity per se, and more about reminding the viewer that she and the rest of Hastati are still only young teenagers.
  • In the Blood: What she considers her military career to be.
  • Military Brat: It is pretty easy to tell she was raised in a purely military lifestyle all her life.
  • Only Child Syndrome: She is her parents' only kid, and thus feels that she has a lot to live up to as she is her family's future.
  • Sacrificial Lamb: The first member of Hastati to die.
  • Screw the Rules, I Have Connections!: She's not afraid to exploit her family connections, despite her stated belief that orders should be followed no matter what. She intimidates a Marine into letting her onto one of the first evacuation pods by threatening him with her mother’s authority as Secretary of FLEETCOM. She offers the same chance to her squadmates, but they all refuse, and she dies when the Covenant destroy the orbital elevator.

     Junjie Chen 

Officer Cadet Junjie "JJ" Chen
Homeworld: Earth
Birthdate: c. 2510
Portrayed by: Osric Chau

A freshman cadet at the Corbulo Academy of Military Science in 2526. He is the only member of Hastati Squad to be from Earth and is friends with Dimah.

  • Asian and Nerdy: Is noted to have very high academic scores, though his combat skills are lacking.


Example of: