A UNSC military base, during the early years of the Human-Covenant war.

A military base is a facility used by the military that shelters military equipment and personnel, and facilitates training and operations. Because of their stationary nature, they make a promising option for enemy assault by either ground or air forces, as well as making an easy target for artillery and orbital bombardment.


The United Nations Space Command makes extensive use of military bases. They are often flexible, using various designs, terrain, and functions in their setup, allowing their occupants the best degree of flexibility possible. Incorporating existing and specialty equipment, ranging from old 20th Century bunkers[1] to Forerunner mesas,[2] to repurposed Colony Starter Units,[3] there are many different types.

Typically, UNSC bases incorporate facilities for storage of weapons, ammunition and equipment, as well as barrack facilities for the personnel that staff it. They are often equipped with heavy defenses, such as autocannons to fend off assaults from Covenant air and ground forces. Normally, arrangements are made for the storage of vehicles for transport and combat, such as Warthogs, allowing fast transport to and from the base. Facilities for aircraft, such as Pelican dropships and AV-22 Sparrowhawk gunships, are standard and, indeed, vital for the bases survival, allowing response to aerial threats, such as Banshees.

Since at least November 2552, the UNSC has used energy shielding, reverse-engineered from Covenant technology, to protect generators in their bases, such as Crow's Nest.[1]

The UNSC also uses Firebases, prefabricated base facilities that serve as platforms for other base structures. Based on Colony Starter Units, their modular design allows for rapid deployment and construction on the battlefield. They can be fitted with up to four automated turrets and a number of different buildings.

Known UNSC basesEdit

Name Location Status
Alpha Base Harvest Unknown
Alpha Base Installation 04 Abandoned by UNSC, destroyed along with the installation.
Alpha Headquarters Sigma Octanus IV Destroyed by Covenant and HAVOK Nuclear Warhead
Base Segundo Terra Mexico City, Mexico, Earth Unknown
Camp Currahee Onyx Destroyed with the planet
Camp Hathcock Reach Overrun by Covenant infantry
Camp Independence Reach Abandoned by UNSC forces
CASTLE Base Reach Destroyed to prevent capture by Covenant invaders
Chawla Base Boston, URNA, Earth Unknown
Crow's Nest Kenya, Earth near Voi Destroyed during Covenant Loyalist assault
Damascus Testing Facility Chi Ceti IV Active
Diego Garcia Diego Garcia, Earth Unknown
Firebase Bravo Sigma Octanus IV Destroyed by Covenant Hunters
Fort Deen Arcadia Likely glassed with the planet
Fort York Unknown Unknown
HIGHCOM Facility Bravo-6 Sydney, Commonwealth of Australia, Earth Unknown
ONI Alpha Site New Mombasa, Earth Destroyed
Outpost C9 Kenyan coast, Earth Unknown
Rat's Nest Kenya, Earth Unknown
Sword Base Reach Destroyed in the Fall of Reach to prevent research from falling into Covenant hands
UCMB Sierra Largo Unknown Unknown
Sabre Program Launch/Research Range Reach Likely destroyed in the Fall of Reach



A Covenant citadel.

Covenant bases are often supported by a ship hovering overhead, supplying troops and matériel through its gravity lift or, in rare cases, teleportation spires that also serve as command centers.[4] Covenant base facilities are usually defended by Shades or automated turrets. The Covenant also employ Citadels, modular socket base units similar in principle to the UNSC Firebase. Covenant Citadels can be protected by an energy shield generator, or larger, dome-shaped shields that are integrated into their Spire facilities but have also been used without a Spire.[5]

In addition, each Covenant species has their own accommodation facilities in the field, including Sangheili huts and Unggoy atmosphere pits.


List of appearancesEdit


  1. 1.0 1.1 Halo 3, campaign level Crow's Nest
  2. Halo: The Flood
  3. Halo Wars
  4. Halo: Reach, campaign level, Tip of the Spear
  5. Halo Wars, campaign level, Dome of Light