‘Brother Pyriel?’ Dak’ir pressed when a response wasn’t forthcoming.

The Librarian was staring at the distant void shield, energy blossoms appearing on its surface only to dissipate seconds later.

‘Something about the shield… An anomaly in its energy signature…’ he breathed. His eyes were glowing cerulean-blue.

For once, Dak’ir felt nothing, just the urge to act.

‘What is it?’

‘I don’t know…’ The psychic fire dimmed in the Librarian’s eyes behind his battle-helm. ‘Oblique assault – one primary, one secondary. East and west,’ he asserted.

Dak’ir nodded, but had a nagging feeling that Pyriel wasn’t telling them everything. He opened a comm-channel to the other combat squads.

‘We move in, brothers. Assault plan serpentine. Brother Apion, you are support. We will take primary. Brother Tsu’gan–’

‘We are ready, Ignean,’ came the harsh reply before Dak’ir had finished. ‘Assault vector locked, I am the primary at the western hemisphere. Tsu’gan out.’

The link was cut abruptly. Dak’ir cursed under his breath.

Taking out his plasma pistol and unsheathing his chainsword, running a gauntleted finger down the flat of the blade and muttering a litany to Vulkan, Dak’ir rose to his feet.

‘Fire-born, advance on my lead.’

Emek’s raised fist brought them to a halt before they could move out. He had his finger pressed to the side of his battle-helm.

‘I’m getting some frantic chatter from the Phalanx units.’ He paused, listening intently. ‘Contact has been lost with several secondary command units.’ Then he looked up. During the pregnant pause, Dak’ir could sense what was coming next.

‘They say they’re under attack… from spectres,’ said Emek.

‘Patch it to all comms, brother. Every combat squad.’

Emek did as asked, and Dak’ir’s battle-helm, together with his brothers’, was filled with the broken reports from the Phalanx command units.

‘…ergeant is dead. Falling back to secondary positions…’

‘…all around us! Throne of Earth, I can’t see a target, I can’t se–’

‘…ead, everyone. They’re out here among us! Oh hell, oh Emperor sa–’

Scattered gunfire and hollow screams punctuated these reports. Some units were attempting to restore order. The barking commands of sergeants and corporals sounded desperate as they tried to reorganise in the face of sudden attack.

Commissar Loth’s voice broke in sporadically, his replies curt and scathing. They must hold and then advance. The Imperium would brook no cowardice in the face of the enemy. Staggered bursts from his bolt pistol concluded each order, suggesting further executions.

Above and omnipresent, the sound of tolling bells filled the air.

‘I saw no chapel or basilica in the Phalanx bastion,’ said Ba’ken. He swept his gaze around slowly, panning with his heavy flamer as he did so.

‘The rebels?’ offered Brother Romulus.

‘How do you explain it being everywhere?’ asked Pyriel, his eyes aglow once more. He regarded the blood-red clouds that hinted at the churning warp storm above. ‘This is an unnatural phenomenon. We are dealing with more than secessionists.’

Dak’ir swore under his breath; he’d made his decision.

‘Spectres or not, we can’t leave the Phalanx to be butchered.’ He switched the comm-feed in his battle-helm to transmit.