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Seat of the Kazitian Synod


Ultima Segmentum


Australis Ultima


Centrumeh Sub-Sector


Oteal System


Mechanicum Forge World



Baylon Map.jpg


Type Large iron/silicate

Mass 2.48 x 1025 kg

Density 5.41 g/cm3

Composition 41.0% iron, 30.9% oxygen, 19.0% silicon, 8.7% magnesium, 0.5% other metals, trace other elements


Gravity 13.07 m/s2

Escape Velocity 15.06 km/s

Rotation Period 31.40 hours

Axis Tilt 13.57 °


Type Thin toxic

Pressure 19.61 kPa

Composition 68.9% sulfur dioxide, 25.0% carbon dioxide, 4.7% methane, 1.3% argon, 0.1% nitrogen, trace other gases



All attempts to census the population have proven to be fruitless as the Synod have multiple restricted areas completed with augury shielding and their own refusal to supply such figures leave estimates ranging from 10 million to 7 billion, with a 98% margin of error.



Well before the coming of the Imperium the Oteal System was ruled by the Kazitian Synod and their seat of power was the mighty Forge World of Baylon. From this planet the Synod first created their vast foundries and then spread to the outer planet of Dur-Kazit to establish a colossal defensive Fortress World with which to protect the system and control the trade routes. Capitlising on this, the Synod then proceeded to bring the Knight Worlds under their rule after which the Baylonian Conclave was formed.

Led by the emotionless logic of the Mechanicum and protected by the Noble Houses of the Knight Worlds, the Oteal System became a powerful player in the Sub-Sector, and all the while the silent strings were being pulled from the rusty forge world of Baylon. Its underground storage constantly being expanded as the planets near limitless resources were mined and converted to valuable trade goods but also masses of unknown products stored for the Synods own use and protection. While certainly not capable of Engine production, their library of STC's is thought to be quite large.


Thanks to the intervention of the Imperials Mechanicum, Baylon itself never saw the flames of forced Compliance. Once the Fortress world of Dur-Kazit was leveled, the negotiated Compliance ceased all hostilities and even granted the Synod some level of power in the System with the two Knight worlds remaining in direct Fealty with Baylon rather than the Imperial governor installed at Laigach, much to his consternation. It was perhaps this situation which led to the continued push for autonomy from the Synod, continually pushing the agenda at all times with the Governor and working against the Imperium in quiet and gradual ways.

Tensions continued to rise as the years slowly ground by, the Governor made continued accusations of the Synods sedition but the SUb-Sector governor at Centrumeh Gate needed the resources produced by the mighty Forge World more than he needed the favour of a back water Governor who didnt even have authority over the entirety of his own system. There was little chance of any other outcome once the Heresy occurred.

Post Compliance

Even before the shocking actions of Istvaan filtered through to the Australis Ultima Sector, the situation in the Oteal System had degenerated to dangerous levels. Rumours of military build ups on the Kazitian loyal planets persisted along with the myth that Dur-Kazit was being secretly rebuilt, however without any evidence the systems Governor could take no direct action against the planets as they were sworn to the Red Planet and owed him no allegiance.

With the onset of civil war and the Fabricator General openly siding with Horus, the Kazitian Synod seized the opportunity and declared independence of the Imperium, reforming the Baylonian Conclave and began mobilising its military. Desperately outgunned the Governor immediately issued a recall to all Imperial forces in the System and requested aid form the Sub-Sector Governor in Centrumeh Gate.

Before the Kazitian forces were able to fully muster, a small armada translated into the system, but not in response to the Governor’s call for aid. It was a splinter element of a fleet loyal to the Warmaster on its way to the Trugoy System to prosecute another war of eradication against the Loyalists. Unsure of the situation and unwilling to engage two potential enemies the Kazitian navy maintained a defensive posture while attempts to communicate with the new player were sent.

Despairing at now having to face two potential hostile forces, the Imperial presence in the system began to prepare for the worst and readied themselves for invasion. Hope blossomed momentarily when a signal from the VIIth was received, confirming that they were en route and less than two days out, this message however was followed quickly by the Sub-Sector wide broadcast from the Imperium, instructing all Loyal fleets to the Trugoy System.

Campaign Reports

Baylonian Insurrection
Baylonian Insurrection Ribbon.png


Even before the shocking actions of Istvaan filtered through to the Australis Ultima ..→

Battle Reports

Battle Name Date Planet Battle Outcome Battle Summary
Baylonian Insurrection~Act 1 139.008.M31 System Wide Loyalist

With the recall of all Imperial forces to the Trugoy System leaving the Oteal system largely defenseless the Governor based on Laigach prepared his forces for invasion from the enemy on two ..→

Baylonian Insurrection~Act 10 694.008.M31 System Wide Traitor

With the final offensive launched, it was only a matter of time before the Traitors declared victory over the system. It was a testament to their resolve that the Loyalist forces held on for as long ..→

Baylonian Insurrection~Act 2 158.008.M31 System Wide Traitor

Using their holdings on Dur-Kazit as a staging point the Traitors were the first to strike out in a renewed attempt to seize territory after a brief respite fractured by sporadic strike force ..→

Baylonian Insurrection~Act 3 216.008.M31 System Wide Traitor

Maintaining the momentum from their advances in the previous stage of the Campaign the Traitors fleet secured the naval lane between Dur-Kazit and Laigach while the Loyalists continued to ..→

Baylonian Insurrection~Act 4 292.008.M31 System Wide Traitor

Even with a number of covert strikes against Dur-Kazit written off as failures, the Loyalist command pushed ahead with the all out assault against the Traitors territories on the Fortress World. ..→

Baylonian Insurrection~Act 5 350.008.M31 System Wide Traitor

Attempting to reconsolidate their position on Dur-Kazit the Traitors forces launches a series of offensives in an effort to retake the entire planet and maintain their control. While somewhat ..→

Baylonian Insurrection~Act 6 388.008.M31 System Wide Loyalist

With both forces reaching a certain level of impasse the Campaign entered a new stage of attrition; both factions launching harassing assaults against each others strongholds in an attempt to break ..→

Baylonian Insurrection~Act 7 464.008.M31 System Wide Traitor

Whether it was the failed attempt to cripple each others ships or a planned change of tactics, the Traitors were no longer willing to play the same game. Entering a new phase of the Campaign the ..→

Baylonian Insurrection~Act 8 541.008.M31 System Wide Unresolved

With the act of rebellion the Baylonian Synod brought the wrath of not only the Loyalists but the Traitors as well. Their intention to reclaim their lost empire and stand apart from the warring ..→

Baylonian Insurrection~Act 9 637.008.M31 System Wide Unresolved

Cautious of the emboldened Synod forces from the previous phase of the war, both Traitors and Loyalists played a far more defensive tactic then either of them had for a long time. Unwilling to leave ..→

Baylonian Insurrection~Zone Mortalis Operation 9 298.008.M31 Baylon Loyalist

A Garrison Overrun Mission.

A single Traitor territory on Baylon has become isolated and is a prime target for intensive covert strikes in order to destroy the small Garrison presence. There is ..→

Skirmish Reports

  • L-VII-8344 defeated L-XII-3140 a Loyalist gain.
  • L-XX-3187 defeated L-XIII-8435 a Traitor gain.
  • I-ARMY-8733 defeated L-XVI-0465 a Traitor gain.
  • L-VII-7184 defeated L-XVI-0465 a Loyalist gain.
  • L-XIX-1024 defeated L-XVI-0465 a Loyalist gain.
  • L-X-4508 defeated L-III-4193 a Loyalist gain.
  • Q-KNT-2151 defeated A-MECH-3341 a Loyalist gain.
  • L-XIV-6515 defeated Q-KNT-2151 a Traitor gain.
  • L-XIV-6515 defeated L-IX-3683 a Traitor gain.
  • L-X-2594 defeated L-IX-3683 a Traitor gain.
  • L-XVIII-1182 defeated L-XVI-0465 a Loyalist gain.
  • L-VII-8344 defeated L-VIII-3108 a Loyalist gain.
  • L-XVIII-2139 defeated A-MECH-3341 a Loyalist gain.
  • L-XVII-5831 defeated L-VII-1925 a Traitor gain.
  • Q-KNT-2151 defeated L-VIII-0972 a Loyalist gain.
  • L-VII-8344 defeated L-XII-3140 a Loyalist gain.
  • L-XX-5126 defeated L-XII-3140 a Loyalist gain.
  • L-X-4508 defeated L-XVII-2055 a Loyalist gain.
  • L-XIX-1024 defeated L-XVII-2055 a Loyalist gain.
  • L-XII-3140 defeated L-I-4977 a Traitor gain.