Penitent’s Square was a cauldron of fire so intense he could feel the heat through his battleplate’s ceramite. The ground shook under his feet and he considered the possibility that the wall would give way. The noise was so all-consuming the idea of speech lost relevance. For five minutes the Lion’s Gate tore madly at its own hide, ripping out chunks of itself in a bid to scrape free the parasites infesting its fabric, then, as suddenly as it had begun, the bombardment ceased.

Where the Penitent’s Square had been, a twisted mass of black metal and shattered stone remained. So formidable were the defences of the Lion’s Gate that the structure beneath had not been penetrated, but it was like this, in small bursts of destruction, that they could lose this war.

Messinius accessed the gate’s noosphere. No daemons had as yet rounded the projecting Penitent’s Spur to come up against their new position. When the attack came again, which it would, it would come from the front.

An ammunition train raced down the walkway from the fortress interior and came to a squealing stop fifty yards away. Medicae personnel jumped down. A Space Marine Apothecary came with them. Human peons rushed about with heavy sack bags full of bolter magazines, passing them out to the trans­humans. Spent magazines clattered to the floor. New ones were slammed home. Messinius contacted his squad leaders, taking a quick census of his surviving men, not trusting the digits that read ‘Company Casualties 23%’ blinking in the upper right of his visual field.

Through the smoke given off by burning metal on the far side of the ruined square, he saw movement. Auspex returns tripped his armour’s machine-spirit, and it blinked warnings in his helm.

<threat detected.>

‘They’re coming again,’ he said.

‘My lord?’ A soft voice, one that did not belong in that moment. He ignored it.

‘Engage at fifty-yard range. Make every shot count.’

The ammunition train was hurriedly relieved of their allotted supplies, and sped off, bearing the worst-wounded, to aid whichever beleaguered unit needed it next.

‘Stand ready.’

‘My lord?’ The voice became more insistent.

The voidships in orbit were beginning to fire. Their targeting systems were perturbed by the boiling warp energy and the vortex in constant motion over the Imperial Palace, and many shots went wide, crashing down into the Anterior Barbican, a few falling as far out as Magnifican.

Red monsters bounded towards them, as numerous as before, as if their efforts to thin them had been for naught.

‘Fire,’ he said coldly.

‘My lord, your duty rotation begins in half an hour. You told me to wake you.’

This time he heard. Bolters boomed. Messinius froze them with a thought, and with another he shut down the hypnomat entirely.

Vitrian Messinius awoke groggily.

‘My lord,’ his servant said. Selwin, he was called. ‘You are returned from your recollections?’