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Laigach and Larza.png
Main Imperial World with orbiting Moon


Ultima Segmentum


Australis Ultima


Centrumeh Sub-Sector


Oteal System


Imperial Agri World



Laigach 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


Approx 15 Million scattered throughout the Agricultural settlements.

95 Million stationed on the Governors Moon, also known as Larza.



Along with Uruq, Laigach was one of the last planets in the system to be colonised and this only came about because the Kazitian Synod had the ability genetically alter a custom bred range of agricultural seeds which would grow in the unusual chemical make up of the planets soil and waterways. Previously deemed as incapable of bring a self a sufficient colony by the Knight Houses, the planet lacked any substantial natural minerals, ores or other such resources and so was never considered for any colonisation attempts.

Realising that the system would require significant food resources to allow it to grow and remain independent of the need to import food stuffs, the Synod spent considerable time in creating suitable crops which could survive on Laigach even before they had formed the Conclave. Once the Knight Worlds had yielded, hundreds of dispersal ships entered planets atmosphere and started seeding the world for future farming; within only a dozen years the planet was transformed from an infertile world to the bread basket of the System.


Being a highly productive agri world capable of supporting nearly eight times the systems current population, Laigach was always going to be a high priority for the Imperium and the Martian delegation conducting the Compliance negotiations new this and leveraged the fact. Coupled with the fact that the worlds single satellite, the moon Larza, also boasted a thin atmosphere and newly discovered mining resources, it quickly became the pivotal key to the talks.

In the end though, the Synod appeared to have certainly pushed that value to the upper limits. With only Laigach, its moon and the desolate Hive world of Uruq coming under direct Imperial control the majority of the system bent its knee to Mars, certainly a convenient outcome for the Martian delegation as well. One caveat however was the requirement for the Synod to assist in the construction of vast fortifications and habitat hives on the moon Larza which was converted into the seat of the Imperial Governorship, the most prestigious option out of a moon, a rural stinking agricultural world and a rotting toxic Hive planet.

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 7 216.008.M31 Laigach Loyalist

Insurgency operations.

Left unchallenged the Loyalist insurgency on the Larza, the moon above Laigach, steadily increased its ferocity until a number of coordinated assaults backed by sympathetic ..→

Skirmish Reports

  • L-I-5246 defeated L-XII-3140 a Loyalist gain.
  • L-XII-3140 defeated L-XIX-1024 a Traitor gain.
  • L-XXXX-1979 defeated L-XVIII-1182 a Traitor gain.
  • L-IV-4190 defeated L-I-5246 a Traitor gain.
  • L-VIII-3108 defeated L-VII-7184 a Traitor gain.
  • L-XII-1974 defeated L-X-4135 a Traitor gain.
  • L-XVII-5831 defeated L-XVIII-1182 a Traitor gain.
  • L-XX-0913 defeated L-XII-3140 a Loyalist gain.
  • L-XII-3140 defeated L-XXXX-1979 a Traitor gain.