Colonial Administration Authority

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Colonial Administration Authority
Body overview

Head of body:

Unified Earth Government[1]

Government branches:

Societal overview

Official language(s):

English, and many others

Official religion(s):



UN credit

Historical overview




By 2525 until 2552, absorbed by the United Nations Space Command


The Colonial Administration Authority (CAA), also known as the Colonial Administration[4] or Colonial Authority,[5] is an organization under the ultimate control of the Unified Earth Government. Formed alongside the Colonial Military Authority in 2310,[3] the CAA acted as a secondary governing body that helped the UEG regulate the various colony worlds of humanity.[6]

The seal of the Colonial Authority is described as a looming profile of an iconic eagle in a circle of seventeen bright stars. The eagle's wing shelters a group of colonists, their hopeful eyes watching a fleet of sleek colony ships flying along the eagle's upturned beak—an image that suggested expansion through unity.[5]


A banner of the Colonial Authority

The Colonial Administration Authority was established by the Unified Earth Government in 2310, alongside the Colonial Military Authority.[3] Formed two decades after the invention of the Shaw-Fujikawa Translight Engine, the CAA was tasked with planning for humanity's extra-solar settlement and colonization, spending the following decades preparing for the inevitable exodus from the Sol system that would occur. The Domus Diaspora began as colony ships left Sol to settle worlds in other systems, beginning with Reach and Tribute in the Epsilon Eridani system.[7][8]

Prior to the onset of the Insurrection, many individuals felt sympathy for the rebels, blaming the Colonial Authority's heavy-handed bureaucrats for their increasingly poor understanding of the unique challenges among the Outer Colonies. However, as more radical insurgent factions abandoned politics, negotiations, and protesting for violence, targeting military infrastructure and key CAA supporters, support for the rebels soon died out as their actions grew more extreme.[9] CAA buildings and personnel were heavily targeted by rebels late in the war.[4] In 2497, the CMA was reorganized and absorbed into the United Nations Space Command, following a series of scandals throughout the Insurrection.[1]

Over the course of the Human-Covenant War, the Unified Earth Government granted substantial authority to the UNSC as a result of emergency powers and breakdown of interstellar governance.[10] The CAA was more resistant to the takeover than the UEG proper, and thus it was stripped of most of its power.[6] Despite this, the CAA Factbook was still being updated as late as 2550.[11] Following the Covenant War, power was restored to the UEG[10] and the CAA returned to its administrative duties as a division of the UEG, although the CAA's influence has become marginal.[1] During the Created conflict in 2558, Jiang, the Colonial Authority AI of Erdenet, defected to the Created.[12]

Organization and powers[edit]

The Colonial Administration Authority serves as the administrative body for the colonies of the Unified Earth Government.[1] In this capacity, the CAA governed the colonies in the UEG's name,[13] its bureaucrats aiding in the management of population and employment,[9] providing power for new colonies,[14] and ensuring the quality of colonial infrastructure.[15] However, colonies maintained sovereignty to some degree, as mandated by the Colonial Authority's own charter.[16] In recent years, the Colonial Authority's influenced has become marginalized.[1] The CAA kept extensive files on every colony, world, and city under its care. The document containing these files was referred to as the CAA Factbook.[11] These files contained everything from topographic maps to the information on the materials the city sewer system was built from. The CAA provided this information to UNSC military forces upon request, and it could be very helpful when defending colonies from Covenant attack.[17] In addition, the CAA oversaw the Outer Colony vaccination program which held the largest DNA database of the human population.[18]

The Colonial Military Authority served as the military and policing arm of the CAA, until it was folded into the United Nations Space Command in 2497.[1] While the CMA maintained its own fleet, its strength eventually shrunk as the UNSC encroached on the CMA's power and influence before absorbing the organization entirely.[13] The CAA formerly housed its own intelligence agency, the Department of Colonial Security. When the CAA lost its power, the DCS was incorporated into the Office of Naval Intelligence.[2] The CAA was also responsible for the colonization of worlds, as evident by the "CAA" ship prefix on their colony ships, such as CAA Butterworth and CAA Casbah.[8]


List of appearances[edit]


  1. ^ a b c d e f g Halo: Warfleet, p. 90
  2. ^ a b Halo: Mortal Dictata, Chapter 2
  3. ^ a b c Halo 4: The Essential Visual Guide, p. 228
  4. ^ a b "Dirt" – Halo: Evolutions, p. 107
  5. ^ a b Halo: Contact Harvest, p. 74
  6. ^ a b Halo Story Page: Frank O'Connor/Robt McLees Interview - August 2008
  7. ^ Halo Mythos, p. 54-55
  8. ^ a b Halo Waypoint: Tribute
  9. ^ a b Halo: Contact Harvest, p. 61
  10. ^ a b Halo Waypoint: UEG
  11. ^ a b CAA Factbook
  12. ^ Halo 5: Guardians, campaign level, "Guardians"
  13. ^ a b Halo Encyclopedia (2009 edition), p. 43 (2011)
  14. ^ Halo: Contact Harvest, p. 183
  15. ^ Halo: Contact Harvest, p. 179
  16. ^ Halo: Contact Harvest, p. 121
  17. ^ Halo: The Fall of Reach, p. 177
  18. ^ Dr. Halsey's personal journal, "February 15, 2511"