As the wall of ceramite and adamantium came at them, Krendl’s armed escorts tried to bring their bolters to bear. The Venerable Vastopol’s gaping twin-autocannons were already loaded, primed and aimed right at them. The weapons crashed, chugging explosive fire at the two rearguard Space Marines and filling the chamber with the unbearable cacophony of battle. At such close range, the heavy weapon reduced the two Legiones Astartes to thrashing blurs of blood and shattered armour.

With more grace and coordination than would have been thought possible in the hulking machine, the charging Dreadnought turned and smashed a third Iron Warrior guard into the opposite aisle with a power claw-appendaged shoulder. The Space Marine’s glorious Maximus suit crumpled and the Legiones Astartes within could be heard screaming as bones snapped and organs ruptured. With Krendl and Serapis backing for cover, silent pistols drawn, and the Mechanicum adept knocked to the Reclusiam floor, the Warsmith’s remaining honour guard flung himself at the Dreadnought. Lifting his bolter above his head, the Iron Warrior blasted the Venerable Vastopol’s armoured womb-tomb with firepower.

Sparks showered from the Dreadnought’s adamantium shell. Vastopol gunned the chainfist bayonet that underslung his autocannons. Slashing at the Iron Warrior with the barbed nightmare, the war machine chewed up the Space Marine’s weapon before opening up his armour from the jaw to the navel. With chest cavity and abdomen spilling their contents out through the ragged gash, the honour guard dropped to his knees and died. Having come away from the wall of sculpture, the Dreadnought had allowed the crushed Legiones Astartes he’d pinned to the merciless iron to thunk to the ground. Lifting a huge metal foot, Vastopol stamped down on the Iron Warrior’s helmet, bespattering the polished stone with brain matter and putting the mauled Space marine out of his howling misery.

As Dantioch came forwards, flanked by Tarrasch and Zhnev on one side and the rector and colonel on the other, Krendl and the Son of Horus retreated: the rage and horror evident on their contorted faces. Both Legiones Astartes officers were backing step by step towards the Grand Reclusiam entrance, their pistols aimed at the unarmed Warsmith and his heavily-armed Dreadnought. Krendl and Serapis were politicians, however, and knew that their best chance of escaping the fortress alive lay in their threats rather than their pistols.

The Venerable Vastopol plucked Grachuss from the floor with the chisel-point digits of his power claw, holding the Mechanicum adept by the temples and hooded crown like an infant’s doll. The sickly yellow lens of the tech-priest’s tri-ocular revolved in panic while his respiratory pipes bubbled furiously.

‘I fear Warsmith Krendl brought you with instructions to catalogue our fortifications,’ Dantioch addressed the suspended Grachuss, ‘so that you might return with stories of our siege capability. A greater Warsmith than he would have done that himself, of course. Vastopol here was the chronicler for our company: he’s not much of a talker now. Vastopol,’ Dantioch called. ‘How does Adept Grachuss’s story end?’

The Dreadnought’s power claw attachment began to revolve at the wrist, wrenching the tech-priest’s hooded head clean from his spinning shoulders. His body struck the altar steps, a cocktail of blood and ichor pumping from the ragged neck stump.

‘Insanity!’ Krendl bawled at the advancing Dantioch. ‘You’re dead!’ The threats had begun.

‘ CaptainKrendl,’ Dantioch hissed. ‘This is an Iron Warrior stronghold. It does not, nor will it ever serve the renegade Warmaster. My garrison and I are loyal to the Emperor: we will not share in your damnation.’ The cold pride that afflicted the Legion, as well as their Iron father, glinted in Dantioch’s cloudy eyes. ‘It seems I have one last opportunity to prove my worthiness to the primarch. I will not fail him this time. The Schadenhold will never fall. Do you hear me, Idriss? This stronghold and the men that defend it will never be yours. The Iron Warriors on Lesser Damantyne fight for their Emperor and they fight for me. You will taste failure and it will be your turn to return to the primarch’s wrath. Now run, you cur. Back to your renegade fleet and take this heretic dog with you.’

Stepping back through the archway of the Grand Reclusiam with a wary Serapis, the wide-eyed Krendl thrust his pistol behind him and then back at the Iron Warriors and their Dreadnought.

‘All of this,’ Krendl waved the muzzle of the bolt pistol around, ‘dust in a day. You hear, Dantioch? Dust in a day!’

‘I dare you to try,’ Dantioch roared, but his challenge dissolved into raucous coughing. As the Warsmith fell to his armoured knees with wheezing exertion, Tarrasch grabbed Dantioch’s arm. Patting the Iron Palatine’s ceramite, the Warsmith caught his breath. Tarrasch let him go but the exhausted Iron Warrior commander remained kneeling and head bowed. Slowly he turned to the hooded rector.

‘So,’ the cleric said, ‘you hear it for yourself: straight from traitor lips. Our brothers’ hearts steeped in warped treason.’ The rector reached inside the rich material of his robes. The soft whine of the displacer field – all but imperceptible before – died down through the frequencies, unmasking the priest and revealing his true dimensions. As the cleric lowered his hood the reality about the huge figure fell out of focus for a moment before reassuming a searing clarity.

Their minds unclouded, the Schadenholders beheld a brother Space Marine: his ornate plate of the deepest blue. He held a plumed helmet under one arm and an ornate gladius sat in a sheath across his thigh. His surcoat robes hung from the resplendent flourishes of his artificer armour, with battle honours and commendations dripping from his glorious plate. The symbol on his right shoulder identified him as an Ultramarine; the bejewelled Crux Aureas crafted into his left as Legionary Champion, Tetrarch of Ultramar and Honour Guard to Roboute Guilliman himself.

‘You played your part well, Tetrarch Nicodemus. Are the Ultramarines usually given to such theatricality?’ Dantioch asked.

‘No, my lord. We are not,’ the champion answered, his cropped hair and fair patrician looks the mark of Ultramar’s warrior elite. ‘But these are uncommon times and they call for tactics uncommon.’

‘Let me be candid, Ultramarine. When you arrived on Lesser Damantyne with your slurs and distant intelligence, I almost had Vastopol blow youfrom the Schadenhold’s battlements.’ The Warsmith came up from his knees, once again with the help of Tarrasch. The Tetrarch shot him hard eyes: one of which was encircled by a neat tattoo of his chapter symbol.

‘It is not easy for an Iron Warrior to hear of his brothers’ weakness,’ Dantioch continued. ‘In that, even Idriss Krendl and I agree. You slandered my father primarch and besmirched the IV Legion with accusations of rebellion, heresy and murder. We’ve allowed your insults to go unpunished; you’ve allowed us the luxury of hearing kindred treason first hand. Our accord is sealed in truth. What now would Roboute Guilliman have of us?’

Tauro Nicodemus looked about the gathering. Tarrasch and Zhnev’s bleak pride matched their Warsmith’s own; the Venerable Vastopol existed only to fight and Colonel Kruishank’s default loyalty was plain to see on his face – allegiance to the Emperor offering him solace in the face of calamity.

‘Nothing you haven’t freely given already,’ Nicodemus insisted. ‘Deny the Warmaster resource and reinforcement. Hold your ground for as long as you can. The efforts of a faithful few could slow the traitor advance. Minutes. Days. Months. Anything, to give the Emperor time to fortify Terra for the coming storm and for my lord to cut through the confusion Horus has sown and prepare a loyalist response.’