Type classification system

Alien technology catalogued by the United Nations Space Command and Office of Naval Intelligence is classified by type number. Type classification is used by the UNSC to catalogue recovered materiel of Covenant origin in the Human-Covenant War, alongside that of the empire's remnants in the post-war era. For classifying spacecraft, the UNSC employ a three-letter system of identification.

A similar Z classification system is employed by the UNSC in the study of technology of Forerunner origin.

Overview
Type-classification is done in one of two ways. For the majority of materiel, the system is formatted as Type-XX or T-XX, with the latter two characters denoting to two numbers - usually signifying the year the item was classified. For example, a Type-25 weapon may have been classified in the year 2525. The UNSC method of classifying equipment by their year caused researchers no small headache as the war continued and new variants were catalogued and categorised, leading to numerous sub-classifications; some Type-classified weaponry also have sub-classification identifiers affixed to the end of their Type-designation such as the Type-25B brute shot or Type-56D needler. Equally, while much equipment was classified by the year of classification, this did not always respond to the first year the equipment was encountered. Some equipment such as the Type-56 Lich were employed sporadically throughout the war with humanity, but due to administrative delays or the battles not producing any surviving captured materiel to analyse, classification may be delayed for years afterwards.

While the vast majority of firearms and vehicles are sorted by the Type-year system, for reasons unknown the Covenant's melee weaponry and grenades are not, instead categorised as Type-X, with only a single numeric not corresponding to any particular year.

Challenges
Type-classification of Covenant technology is a challenge for UNSC analysts, due to the way the Covenant categorises and uses its own technology. Rather than rigid standardisation as in the UNSC's armed services, the Covenant employ thousands of variations of a given design family, all roughly grouped as simply Shades or Wraiths. By contrast, the meticulous standards of human analysts ensure that almost every single minor variation of an equipment series goes catalogued even when the Covenant would not do so.

The Covenant themselves use design patterns to classify their materiel, ranging from the smallest firearms up to the largest supercarriers. Due to the differences in how both organisations classify equipment, design patterns generally do not always line up with UNSC classifications. For example, the UNSC type designation Type-52 Phantom was applied to two models of Phantom at different times, the and, with minor variations of the latter also being type-classified as the Type-44.

Types 1-3

 * Type-1 Energy Weapon/Sword
 * Type-1 Antipersonnel Grenade
 * Type-2 Energy Weapon/Hammer
 * Type-2 Antipersonnel Fragmentation Grenade
 * Type-3 Refraction Dissonance Modifier/Camouflage
 * Type-3 Antipersonnel/Antimaterial Incendiary Grenade

20-series
Type-25 equipment constitutes the majority of weapons and vehicles encountered in the first months of the Covenant war, predominantly that encounted at Harvest.
 * Type-25
 * Type-25 Anti-Infantry Stationary Gun
 * Type-25 Carbine
 * Type-25 Directed Energy Pistol
 * Type-25 Directed Energy Rifle
 * Type-25 Grenade Launcher
 * Type-26B Brute Shot
 * Type-25 Rapid Assault Vehicle
 * Type-25 Troop Carrier


 * Type-26
 * Type-26 Heavy Anti-Armor Weapon/Mounted
 * Type-26 Anti-Infantry Stationary Gun
 * Type-26 Assault Gun Carriage
 * Type-26 Directed Energy Mortar
 * Type-26 Directed Energy Weapon Emplacement
 * Type-26 Directed Energy Weapon/Linked
 * Type-26 Ground Support Aircraft
 * Type-26A Ground Support Aircraft
 * Type-26AZ Ground Support Aircraft
 * Type-26B Ground Support Aircraft
 * Type-26BZ Ground Support Aircraft
 * Type-26C Ground Support Aircraft


 * Type-27
 * Type-27 Anti-Aircraft Cannon
 * Type-27 Anti-Infantry Stationary Gun
 * Type-27 Exoatmospheric Multirole Fighter
 * Type-27 Special Application Sniper Rifle
 * Type-27 Responsive Holographic Form Emulator


 * Type-28
 * Type-28 Intrusion Vehicle
 * Type-28 Troop Carrier


 * Type-29
 * Type-29 Anti-Infantry Stationary Gun
 * Type-29 Anti-Infantry Weapon Emplacement/Mounted
 * Type-29 Close Support Fighter
 * Type-29 Troop/Vehicle Transport
 * Type-29 Ultra-Heavy Site Excavator

30-series

 * Type-30
 * Type-30 Light Excavation/Anti-Fortification Platform


 * Type-31
 * Type-31 Exoatmospheric Multirole Fighter
 * Type-31 Needle Rifle


 * Type-32
 * Type-32 Directed Energy Weapon/Linked
 * Type-32 Rapid Attack Vehicle


 * Type-33
 * Type-33 Guided Munitions Launcher
 * Type-33 Light Anti-Armor Weapon


 * Type-36
 * Type-36 Ultra-Heavy Siege Platform


 * Type-38
 * Type-38 Anti-Aircraft Cannon

40-series

 * Type-42
 * Type-42 Directed Energy Support Weapon


 * Type-44
 * Type-26 Directed Energy Weapon/Mounted
 * Type-44 Troop Carrier


 * Type-46
 * Type-46 Infantry Support Vehicle
 * Type-46 Directed Energy Weapon/Mounted


 * Type-47
 * Type-47A Ultra-Heavy Assault Platform
 * Type-47B Ultra-Heavy Assault Platform


 * Type-48
 * Type-48 Light Assault Gun Carriage
 * Type-48 Artillery Platform

50-series

 * Type-50
 * Type-50 Directed Energy Rifle/Heavy
 * Type-50 Sniper Rifle System


 * Type-51
 * Type-51 Carbine
 * Type-51 Individual Breaching Carapace
 * Type-51 Directed Energy Rifle/Improved


 * Type-52
 * Type-52 Anti-Aircraft Artillery
 * Type-52 Special Applications Rifle
 * Type-52 Pistol
 * Type-52 Troop Carrier
 * Type-52 Directed Energy Support Weapon
 * Type-52 Guided Munitions Launcher/Explosive
 * Type-52 Infantry Support Vehicle

The majority of equipment classified after the year 2552 represents much of the equipment of Sangheili origin, employed during the Blooding Years by the Swords of Sanghelios, Jul 'Mdama's Covenant and other groups. Some of this equipment dates back to before the War of Beginnings, thousands of years ago.


 * Type-53
 * Type-53 Plasma Bolt Launcher
 * Type-53 Squad Breaching Carapace


 * Type-54
 * Type-54 Ground Support Aircraft
 * Type-54 Rapid Attack Vehicle
 * Type-54 Mass Deployment Carapace
 * Type-54 Directed Energy Pistol
 * Type-54D plasma pistol


 * Type-55
 * Type-55 Anti-Infantry Stationary Gun
 * Type-55 Individual Breaching Carapace
 * Type-55 Directed Energy Rifle/Advanced
 * Type-55 Squad Breaching Carapace
 * Type-55 Ultra-Heavy Siege Tower


 * Type-56
 * Type-56 Anti-Aerospace Turret
 * Type-56 Deployment Platform Ground Support/Ultra Heavy
 * Type-56 needler
 * Type-56D Guided Munitions Launcher
 * Type-56 Projected Energy Weapon/Mounted


 * Type-57
 * Type-57 Carbine
 * Type-57B carbine
 * Type-57 Dropship Troop Carrier
 * Type-57 Troop Carrier


 * Type-58
 * Type-58 Anti-Air Artillery
 * Type-58 Directed Energy Mortar
 * Type-58 Directed Energy Support Weapon
 * Type-58 Light Anti-Armor Weapon
 * Type-58 Light Assault Gun Carriage
 * Type-58 Ultra-Heavy Site Excavator/Embedded

Class designations
A similar system for designating equipment of Covenant origin is also used by humanity in parallel with the Type-designations. Unlike the type-system, class-designations are used to describe families of weapon systems - predominantly the varying classifications of plasma cannons. Class designations typically designate their weapon type as Class- followed by a single-digit numeric suffix - usually a 1 or 2. These classifications generally seem to correspond (respectively) with the concepts of "light" and "medium" iterations of a given weapon system, though it stands to follow that a hypothetical "Class-3" may correspond with heavy iterations of the same weapon systems.

Class designations are also used by the UNSC to refer to human-manufactured equipment such as various Bumblebee models, or the Class-2 GMLS employed by the AV-14 Hornet, but it is unknown whether these two systems have any crossover.

List of class designations

 * Class-1
 * Class-1 directed energy cannon


 * Class-2
 * Class-2 caseless projectile
 * Class-2 directed energy cannon


 * Class-2 medium plasma mortar


 * Class-3
 * Class-3 caseless projectile