United Nations Space Command

Summary
The United Nations Space Command is a military organization from the Halo universe. Known military units within the UNSC include the Marines and the Orbital Drop Shock Troopers (because of their reckless nature, also known as the Helljumpers). The UNSC currently wages war with The Covenant.

Within the UNSC is the Office of Naval Intelligence (ONI), which is responsible for the SPARTAN II Project.

UNSC Weaponry
These are the weapons that the UNSC employs against the likes of The Covenant.

Halo: Combat Evolved

 * Assault Rifle - MA5B Assault Rifle
 * Frag Grenade - M9 HE-DP Fragmentation Grenade
 * Pistol - M6D Pistol
 * Rocket Launcher - M19 SSM (SPNKr) Rocket Launcher
 * Shotgun - M90 Shotgun
 * Sniper Rifle - S2 AM Sniper Rifle

Halo 2

 * Battle Rifle - BR55 Rifle
 * Gun Turret
 * Magnum - M6C Magnum
 * SMG - M7/Caseless Sub Machine Gun
 * Rocket Launcher (Halo 2) - M41 SSR MAV/AW

The Novels
The weapons exclusive to Halo: The Fall of Reach, Halo: The Flood and Halo: First Strike.


 * Combat Knife
 * Fury Tactical Nukes
 * Lotus Anti Tank Mine
 * Nova

UNSC Vehicles

 * Scorpion - M808B Main Battle Tank


 * Warthog - M12 LRV Jeep with mounted chaingun, rocket launcher or gauss cannon


 * Mongoose - All-Terrain Vehicle


 * Pelican - Dropship


 * Bumblebee - Escape pod


 * Longsword - Spaceship fighter

UNSC Starships
Carriers:


 * Trafalgar - Supercarrier - it was destroyed at the battle above Reach in 2552.

Known, active or destroyed carriers:


 * Atlas - Carrier - the ship where Spartan-117, killed 4 ODSTs in the ship's gym.


 * Musashi - Carrier - destroyed at the Battle of Reach in 2552.


 * Magellan - Carrier

Cruisers:


 * Pillar of Autumn - Halcyon-class cruiser - commanded by Captain Jacob Keyes, it fled the Fall of Reach, later to discovery Halo, and chashed onto it. Later it played the final rule of destroying Installation 04.


 * Dawn Under Heaven - Halcyon-class cruiser - The Pillar of Autumn´s sister ship.

Destroyers:


 * Iroquois - Destroyer - commanded by Jacob Keyes before he became a captain of the Pillar of Autumn.


 * Pioneer - Heracles-class Destroyer

Frigates:


 * In Amber Clad - Frigate - commanded by Miranda Keyes, it crashed into High Charity with Flood forms.


 * Gettysbrug - Frigate - this ship was linked to the Ascendant Justice, thus becoming the first hybrid vessel with a human and a Covenant ship in history.


 * Tharsis - Frigate - it was destroyed at the Battle of Reach.

Prowler:


 * Circumference - Stealth Ship - was docked with Gamma Station over Reach, when the planet fell into Covenant hands. Spartan-117 secured the NAV-database inside of the Circumference, before it to, fell into Covenant hands.

Ships that are of unknown class:


 * Leviathan - Cruiser or a Carrier??


 * Hannibal - ??


 * Apocalypso - ??

UNSC Orbitals

 * Cairo Station - MAC Gun Orbital


 * Athens Station - MAC Gun Orbital


 * Malta Station - MAC Gun Orbital


 * Cradle - Refit station