Editing Nobledark Imperium Drafts (section)

==== The Siege of Lusitan ====

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The members of the Hubworld League have always been a proud and stubborn people, who would rather die than admit defeat. Despite being a brash, salt-of-the-earth type of people, they are brilliant innovators and engineers and can be single-minded when it comes to retribution. These traits are well-displayed by the events of the Siege of Lusitan.

Lusitan was once a prominent mining colony located in the galactic south of Hubworld territory. The planet was covered by large fissures and volcanic activity as a result of tidal flexing due to its proximity to its parent star, with some openings reaching all the way down to the deep mantle. As a result, it was rich in rare and valuable minerals that were normally only found deep beneath a planet's core. Therefore, the high gravity and mineral wealth of Lusitan made it a perfect colony for the Hubworld League.

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When Leviathan, the third of the three great tyranid scouting fleets, emerged on the galactic scene, most people would have predicted that the hive fleet would have made galaxyfall in the galactic east, as Behemoth and Kraken did before it. However, this was not the case. Instead, Leviathan made a sudden swerve in its trajectory, seemingly to avoid a passing through a particular region of space, and made galaxyfall at a slight angle to the galactic plane in the Segmentum Tempestus. As a result, many planets that had been far away from the front lines of the first two Tyranic Wars were now under threat by the tyranid menace, including many worlds of the Hubworld League. This included Lusitan, as a small tendril of Leviathan broke off from the main hive fleet to directly besiege the small colony.

Lusitan was not a major Hubworlder settlement, but the planet was an important component in the Hubworld League’s economy, and so although the planet was not as well protected as a major world of the Hubworld League it was better defended than the majority of its colonies. As a result, the defenders of Lusitan were able to hold out against the initial waves of hormagaunts and termagaunts but began to lose ground when higher tyranid lifeforms such as carnifexes and tervigons started appearing. About the only good news was that the tyranids seemed unable to make use of organisms such as mawlocs and trygons, Lusitan’s crust being too thin and volatile for them to work efficiently. The Hubworlders fought like madmen, making the tyranids pay in blood for every inch they took, but unfortunately for the Hubworlders the tyranids always seemed to have blood to spare. 

After three weeks of heavy fighting, the people of Lusitan received some unexpected good news. A relief fleet had arrived, travelling via sub-light speeds after warping in as close as they could get to Lusitan’s star system. The relief fleet was comprised of Hubworlders and Imperials from nearly a dozen different Imperial member states, spearheaded by a small force of Salamanders from nearby Nocturne led by Second Captain Hal’shan. However, the rescuers were surprised when they received a message from the Lusitanians telling them not to land on the planet’s surface. At first the rescue fleet just thought this was merely Hubworlder stubborness at work, and tried to force their way to the planet's surface, even after the Hubworlders began physically blockading their ships from landing. This only stopped after the leader of Lusitan, Governor Vardun, opened a private channel of communication to the flagship of the rescue effort and Hal’shan.

The exact words of that conversation remain unknown, but after it was over Hal’shan’s behavior changed completely, ordering all ships to cease attempts at landing and instead focus all efforts in helping the Hubworlders evacuate. Over the next several hours thousands of ships launched off from Lusitan’s surface, protected from the hive ships by the rescue fleet, and before long most of Lusitan’s population was in orbit. Following that, Hal’shan immediately ordered all ships to escort the Hubworlder vessels to the edges of the system, leaving what few people remained on Lusitan’s surface. At the time, this order was not popular, and several protested this decision, but Hal’shan responded that the Hubworlder ships were in danger and it was their duty to help the civilians evacuate first.

The only reason we know of what happened next was due to a few Salamanders who refused to leave the few Hubworlders left on Lusitan to die. Geological mapping of Lusitan's surface had indicated that compared to most planets the crust was unusually thin, and essentially held above the mantle by a series of caverns supported by a few key structural weak points. Destroying these points would cause the crust to collapse into the mantle, which in turn would cause the magma to rise and swamp the planet's entire land surface. This was Governor Vardun’s entire plan. Over the last few days, he had converted several mining charges into makeshift explosives scattered around the planet as Lusitan’s defenders had bought time with their lives. And now, with the majority of Lusitan’s people in orbit, he could execute this plan with a clear conscience.

The tyranids were simply too numerous to be removed through conventional means. The size of the tyranid thread on Lusitan had been severely underestimated, so even with the arrival of reinforcements the tyranids could only be discouraged, not defeated in a fair fight. At the same time, the tendril of Leviathan had to be stopped here, or else the entire Hubworld League would be under threat. Vardun had struggled with this dilemma for days, either sacrifice Lusitan for the sake of the greater good or hold out for the possibility of reinforcements and hope that his decision to preserve Lusitan hadn't been for nothing.

The rescue fleet had changed that. Now, no one had to die to remove the tyranids from Lusitan’s surface. Well, no one other than himself and his advisors, at any rate. If someone had to die, might as well be the ones who had come up with the plan in the first place. Vardun transmitted his last words of vengeance against the tyranids and then, without hesitation, threw the switch.

''"Fry, you overgrown space roaches"''
- Last known words of Governor Vardun

The move, although militarily unorthodox, was a stunning success. Tyranids usually recouped their losses by consuming the biomass of their dead, but this time the bodies of their troops were buried under several stories of molten lava. The sudden simultaneous death of so many synapse creatures caused a brief disruption in the Shadow in the Warp, which allowed Imperial reinforcements to come in and slaughter the Hive Ships in orbit.

However, the victory had not come without terrible costs. For one, Governor Vardun and all the leaders of the Lusitan colony were dead. On top of that, the entire topology of the planet had been disturbed and its surface was covered in lava. It would be centuries, if not millennia, before the lava cooled and the planet stabilized enough for resettlement. The tyranids were gone, but the people of Lusitan now had no home to return to.

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