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
 * Cut down Assault Rifle - MA2B Assault Rifle

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

Carriers

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


 * UNSC Atlas


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


 * UNSC Magellan

Cruisers

 *  UNSC Levitahan - Marathon-class cruiser


 * UNSC Pillar of Autumn - Halcyon-class cruiser


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

Destroyers

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


 * UNSC Resolute


 *  UNSC Pioneer - Heracles-class Destroyer


 * UNSC Heracles


 * UNSC Lancelot - fought in the Battle of Sigma Octanus IV


 * UNSC Minoutar - destroyed in the Battle of Reach


 * UNSC Herodotus - destroyed in the Battle of Reach

Frigates

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


 * UNSC Gettysberg


 * UNSC Commonwealth


 * UNSC Arabia


 * UNSC Vostok


 * UNSC Gorgon


 * UNSC Meriwether Lewis


 * UNSC Midsummer Night


 * UNSC Alliance


 * UNSC Tharsis - destroyed at the Battle of Reach


 * UNSC Fair Weather - destroyed at the Battle of Sigma Octanus IV

ONI Prowlers

 * Circumference


 * Athens


 * Applebee - discovered in Reach dock by Cortana


 * Lark - discovered in Reach dock by Cortana

Other Ships

 * Han - Diplomatic Shuttle


 * Apocalypso


 * UNSC Hannibal - Cruiser or Carrier?


 * UNSC Basra - Cruiser or Carrier?

MAC Gun Orbitals

 * Cairo Station


 * Athens Station


 * Malta Station

Mobile Stations

 * Cradle - Refit station

Remote Scanning Outposts

 * UNSC Fermion


 * UNSC Archimedes

UNSC Military Units

 * 105th Orbital Drop Shock Trooper Division


 * 23rd Naval Air Squadron


 * 405th Marine Infantry Division