Mark of Calth: 25 (The Horus Heresy)

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When the Horus Heresy ended and Roboute Guilliman initiated the Second Founding and the Reformation of the Imperium as its first Lord Commander, he would get his wish, and the Imperium would once more make use of psychic powers against the forces of Chaos despite the inherent dangers. Though Calth itself was irreparably irradiated by the savagery of the Word Bearers and their daemonic allies, the forces of Chaos were eventually driven off. It reduced Traitor Titans, armoured vehicles, Chaos Cult auxiliary and Word Bearers infantry formations to so much ash within only seconds. However, the weapon strike occurred less than half a kilometre from where the Loyalists had taken shelter from the coming impact. After the massacres of loyalist forces at Isstvan III and V, and having gained the allegiance of Lorgar and the other Traitor Primarchs, Horus believed that the Ultramarines - the largest of all the Space Marine Legions - were the last and only significant obstacle to his total victory over the Emperor [2k].

While the remnants of the Ultramarines and the Imperial Army were making their exodus to the caverns beneath Calth to escape the irradiation of the world's surface, the Ultramarines' 21 st Company, under the command of Captain Erikon Gaius, were dug in at one of the railway tunnels leading to Numinus City. Every post will be filled with Spoilers from the novel so if you haven't read this week's book then proceed with caution. Horus Heresy Saga: Mark of Calth At the same time that Lorgar had concentrated his Legion's offensive on Calth, a separate assault by the XVII th Legion on the Ultramarines' homeworld of Macragge had been prepared, using a massive prototype Battleship specially constructed by Horus' allies in the Mechanicum before the start of the Heresy known as the Furious Abyss. The Campanile continued to plow through the orbital installations surrounding Calth, shooting forward like a solid projectile, a gargantuan mass of streaking death. It annihilated a pair of slipways and the ships within them, ramming through the vital data-engine hub and destroying multiple data-engines as well. As the automatics failed and the noosphere experienced a critical and fatal interrupt, the orbital fleet yard’s power core was obliterated, killing over 35,000 men and women. The Campanile finally broke up, still travelling at immensely high realspace velocities, and a large chunk of the disintegrating vessel spun out of control and destroyed another Ultramarines Battleship. The remaining pieces of the Campanile cleared the far side of the Calth Veridian Anchor and rained down, burning like meteorites, upon the surface of the planet. Ventanus was immortalised on the cover of Mark of Calth , the 25th book in The Horus Heresy series which chronicles the planet’s demise.This anthology contains the following stories: The Shards of Erebus by Guy Haley, Calth That Was by Graham McNeill, Dark Heart by Anthony Reynolds, The Traveller by David Annandale, A Deeper Darkness by Rob Sanders, The Underworld War by Aaron Dembski-Bowden and Unmarked by Dan Abnett. The reinforcements included a column of Land Raiders and other armour supported by three Titans: two Reavers and a massive Warlord-class Titan. An infantry force followed, moving rapidly. This force included mostly Ultramarines and Mechanicus Skitarii elements from Barrtor and the Sharud muster, but there were 20,000 Imperial Army troops as well, bringing lighter armoured vehicles and support weapons to bear. The relief force formed two prongs of assault. One was a Legion force led by a sergeant of the 112 th Company named Anchise, and a captain of the 19 th Company called Aethon. The other was predominantly composed of Imperial Army troops commanded by a Colonel Bartol of the 41 st Neride Regiment, but it was now under the direct command of Eikos Lamiad and a lumbering Ultramarines Contemptor Pattern Dreadnought. The first use refers to the Ultramarines' official time index for the progress of the battle. It was customary for the Ultramarines to commence a timer at the outset of any engagement, so that events could be put into context for later analysis. [1b]

At the breaking of the final seal, the hosts of hell were awakened and wroth poured forth upon the land." Yes, specified Horus, his expression hurt, nonetheless established. Our teamed think the Emperor to be the supreme personification of quality, Fulgrim, however we were incorrect. He is not excellent, he is just a male, as well as we make every effort to mimic his lie. As befits the man who masterminded the defence of a whole world, Ventanus has the Resolute Planning Trait if he’s your Warlord, allowing Ultramarines units to hunker down on an objective and really keep their grip on it.

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Now, as the planet is scoured by solar flares from the wounded Veridian star, the survivors must take the fight to the remaining Word Bearers and their foul allies in the Underworld War, or face damnation in the gloomy arcology shelters beneath the planet's surface.

Yet, despite the Loyalists' last-minute victory and the survival of the Ultramarines Legion and its Primarch, the forces of Chaos could consider their assault on Calth a success. The XIII th Legion had been badly crippled and no longer presented a viable threat to Horus' plan to drive on Terra. The campaign was launched by the Word Bearers' Primarch Lorgar Aurelian with the goal of exterminating the XIII th Space Marine Legion outright. The purpose of the Word Bearers' invasion of the Ultramarines' Realm of Ultramar in the Eastern Fringes of the galaxy was to tie down the XIII th Legion and prevent them from reinforcing their fellow Loyalists as the Traitor Legions marched relentlessly on Terra itself. During the Heresy two human Chaos-devotees fight to the death under Xen's supervision. The winner, Criol Fowst, is gifted the athame as a prize. Fowst has it with him on Calth when he is punched in the head by a loader-servitor and killed, and the athame is taken by Oll Persson, a Perpetual, who uses it to enter the Warp on his own secret mission.

Ultramarines rally to defend Macragge's Honour from the Daemonic forces unleashed by the Word Bearers

The surface of Calth was no longer a safe environment for human habitation or any form of organic life, nor was it possible to evacuate the planet's remaining population in time. Therefore, Captain Ventanus sent out a warning over the planetary Vox and data network to all citizens, soldiers of the Imperial Army, Astartes of the XIII th Legion, and any other loyal servant of the Imperium, to move with all haste to the subterranean arcology or arcology system closest to them. The Heresy came to Calth without warning. In just a few hours of betrayal and bloodshed, the proud warriors of the XIIIth Legion – Guilliman’s own Ultramarines – were laid low by the treachery of their erstwhile brothers of the XVIIth. Now, as the planet is scoured by solar flares from the wounded Veridian star, the survivors must take the fight to the remaining Word Bearers and their foul allies, or face damnation in the gloomy arcology shelters beneath the planet’s surface.

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The following information is not to be regarded as officially sanctioned and/ or is not written from an in-universe point of view. A detailed explanation of the term "Trivia" as used in the Lexicanum can be found here. Worse still, the creatures were able to shrug off even the heaviest weight of fire from the Space Marines' bolters and other weapons. They swarmed unharmed through hails of fire to fall upon the defenders with otherworldly savagery. The creatures followed no perceivable strategy or logic, and it was apparent they had no objective but to shed blood. It would later be observed that they appeared more to be culling prey than fighting an opponent in any conventional sense, an observation many others would make before the end. A collection of stories by authors including Dan Abnett, Aaron Demsbki-Bowden and Rob Sanders. The battle for Calth is far from over... As the southern island cities were being pounded to dust and vapour, the battle in the void was spilling ever further across Calth Near-Space. The world was ringed by over nine hundred orbital defence platforms, each bristling with lance turrets, weapons Having secured the shipmaster and the senior Mechanicum magos, the Ultramarines Legion had won a very real hope of regaining control of the Macragge's Honour. It was not until both Gage's and Thiel's forces at last fought their way through what remained of the warp incursion and rendezvoused at the auxiliary bridge that either knew for certain that the other had succeeded in their mission. It was a tense wait for the first squads to arrive at the muster point, but it was soon apparent that both forces had achieved their equally vital objectives.