UNSC Bases are military installations used by the UNSC. 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 to Forerunner mesas, to repurposed Colony Starter Units, there are many different types. UNSC Bases serve as the primary deployment location for the Army branch of the UNSCDF who use planetary bases rather than naval ships like the other branches.
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.
Because of their stationary nature, the fact that UNSC bases do not move means that they make a promising target for Covenant assault by either ground or air forces, as well as making an easy target for Wraith artillery and orbital bombardment. Usually, if things reach this stage, there is little that can be done to defend the base, as the Covenant's overwhelming firepower wipes the area out in a very short amount of time.
|Fort Deen||Arcadia||Likely glassed with the planet|
|Base Segundo Terra||Mexico City, Mexico, Earth||Unknown|
|Chawla Base||Boston, URNA, Earth||Unknown|
|Crow's Nest||Kenya, Earth near Voi||Destroyed by Covenant Loyalist assault|
|Diego Garcia||Diego Garcia, Earth||Unknown|
|HIGHCOM Facility Bravo-6||Sydney, Australia, Earth||Unknown|
|Outpost C9||Kenyan coast, Earth||Unknown|
|Rat's Nest||Kenya, Earth||Unknown|
|Alpha Base||Installation 04||Abandoned by UNSC, destroyed along with the installation.|
|Camp Hathcock||Reach||Overrun by Covenant infantry|
|Camp Independence||Reach||Abandoned by UNSC forces|
|Sword Base||Reach||Likely destroyed in the Fall of Reach|
|Sabre Program Launch/Research Range||Reach||Likely destroyed in the Fall of Reach|
|Alpha Headquarters||Sigma Octanus IV||Destroyed by Covenant and HAVOK Nuclear Warhead|
|Firebase Bravo||Sigma Octanus IV||Destroyed by Covenant Hunters|
|Camp Currahee||Onyx||Destroyed with the planet|
|Camp Patmos||Chi Rho||Unknown|
|UCMB Sierra Largo||Unknown||Unknown|