"What just happened to me?"
Grey's voice crackled over the vox, broken by static and raw confusion. His breathing came hard, too fast, each inhale scraping against the inside of his helmet. His nerves still burned from whatever had seized him moments earlier, a sharp crawling ache running beneath the skin as if someone had dragged a live current through his bones.
For a moment, he had not owned his body.
He had felt his muscles lock. His thoughts blur. His will pushed aside by something he could neither see nor strike.
That frightened him more than the enemy. A charging heretic could be shot. A tank could be burned. A clawed mutant could be kept at distance. But this had been different. This had reached through armor, training, and instinct, and made him helpless. Something fundamentally wrong had touched him.
"Just the usual warp trickery. What else?" Qin Mo replied. His tone was clipped, almost dismissive, but his eyes had already turned back toward the battlefield. The explanation was not comfort. It was a lid slammed down on a dangerous question because there were still enemies alive, and living enemies were a more immediate problem than fear.
There were still heretics left to exterminate.
Grey swallowed, forced his breathing under control, and raised his weapon again. His hands shook once before the armor's servos steadied them. No time for doubt. No time to ask whether the thing that had touched him might come back.
He stepped forward and took his place beside Qin Mo.
The rhythmic thud of weapons fire pounded through the smoke. Las-bolts flashed through the ash-choked air. Autogun rounds sparked from broken ferrocrete. The last formations of the outpost's defenders-turned-heretics tried to hold, then tried to retreat, then simply tried to die facing the right direction.
Qin Mo did not let them choose. Together, he and Grey annihilated the remaining thousand-strong heretic force stationed at the outpost.
It was not a battle. It was a slaughter.
Qin Mo moved with cold efficiency, burning out clusters of resistance before they could regroup, breaking barricades with invisible force, and cutting down anyone carrying heavy weapons before they could bring them to bear. Grey followed in his wake, his power armor carrying him through smoke and debris while the grav-shield turned bullets into harmless scraps that rained around his boots.
The heretics died in pockets. A squad behind a collapsed hab-wall vanished in fire. A gun team trying to pivot a heavy stubber found its weapon twisted shut around the feed belt. A knot of cultists charged screaming through the smoke, only to be met by Grey's disciplined fire and Qin Mo's lightning.
When the last enemy fell, the outpost did not become quiet. Not truly. Fires still crackled. Ruined ammunition cooked off in slow, irregular pops. Wounded men groaned from places no one had time to search. Pipes hissed overhead, venting steam into the burnt air.
Ash choked the battlefield, turning every breath bitter. The ground was slick with blood, melted plastek, and the pulped remains of men who had mistaken fanaticism for protection. Broken weapons lay half-buried in mud. Here and there, devotional scraps bearing the symbols of the cult curled and blackened in small fires.
Grey finally dropped to one knee, then slumped fully onto the ground. His armored chestplate rose and fell as he struggled to catch his breath. The power armor supported his weight, but it could not make exhaustion disappear.
"You know…" he managed, voice rough with smoke and fatigue. "Compared to that firestorm you just unleashed, this power armor feels kind of weak."
Qin Mo did not answer. He stood unmoving amid the charred bodies, staff lowered, eyes fixed across the battlefield as if reading something written in the smoke. The fires painted his face in shifting orange light, but his expression had gone still. Too still.
Grey frowned.
"What's wrong?"
Qin Mo lifted his head. His voice remained calm, but there was no ease in it.
"The heretics have marked me."
Grey's exhaustion vanished beneath a spike of alarm. He pushed himself upright at once.
"That's bad."
The words sounded inadequate the moment he said them. Grey knew it. Qin Mo knew it. But there was no better phrase available.
By now, nearly ten thousand Imperial defenders across two key outposts had survived only because Qin Mo had intervened. Men who should have died under artillery, claws, and cultist charges were still breathing because one impossible man had appeared where the line was about to break.
And countless others were still fighting elsewhere in the Underhive, trapped in isolated strongholds, awaiting reinforcement that might never come.
If the heretics had identified Qin Mo as the reason their assaults were failing, they would adjust. They would not waste him as just another target. They would hunt him.
Every assassin. Every warband. Every mutant shock troop. Every hidden psyker. Every tank commander willing to shell his own infantry if Qin Mo stood among them.
No cost too high. No method too extreme.
Grey exhaled sharply. For a few seconds, he said nothing. The decision forming in his mind was not sudden. It had been growing since the first time Qin Mo dragged survivors out of certain death.
"Qin Mo."
"What?"
Grey reached up and removed his helmet. The locks hissed open. Stale, hot battlefield air struck his face at once, carrying the stink of ash, blood, and scorched meat. He ignored it and looked Qin Mo in the eye.
His expression was pale, exhausted, and utterly unwavering.
"I believe every life has a different value," Grey said. "And yours is worth more than all of ours combined. If I have to lay down my life for you, just say the word."
Qin Mo looked at him for a moment. Then he chuckled softly, a rare crack in the hard shell of focus he wore on the battlefield.
It was not mockery. If anything, it sounded tired. He turned away.
"You're already doing that."
Grey stood and followed. "Shouldn't you hide? Find somewhere the heretics can't reach you?"
Qin Mo shook his head without hesitation.
"I don't need to hide, and I won't. Let them come. Assassins, warbands, sorcerers, mutant shock troops, whatever else they have buried in the dark. The more they focus on me, the fewer enemies our allies have to face. Every shell aimed at me is a shell not hitting a bunker full of wounded men. Every cultist chasing me is one less climbing someone else's barricade." His voice hardened. "That increases their chances of surviving until we reach them."
Grey stared at Qin Mo's back in silence. He understood the logic. He hated the logic. Both things could be true.
Qin Mo turned and issued the next order.
"We're regrouping with the other four, then heading back to the 47th Regiment's stronghold."
Grey's eyebrow arched. "We're not searching for more outposts?"
"That was my original plan," Qin Mo admitted. "Find them, establish communications, build a resistance network, then expand from there. But now…"
He looked across the smoking battlefield.
"That approach is wrong."
They walked through the ruined outpost, boots crunching over brittle ash, shell fragments, broken teeth, and pieces of armor that no longer had owners. The surviving defenders watched them pass with a mixture of awe and fear, but no one interrupted. Men were too busy counting ammunition, dragging wounded away from burning wreckage, and convincing themselves the enemy was truly gone.
Qin Mo spoke as they moved.
"Our first priority is logistics. A force that cannot feed itself, arm itself, repair itself, or move supplies is not an army. It is a future casualty report."
Grey glanced at him but did not interrupt.
"We need a stable supply chain and enough weapons before we do anything else. After that, proper reconnaissance equipment. We cannot keep running through the Underhive blind, choosing directions based on smoke, gunfire, and guesswork."
He kicked aside the twisted remains of a cultist autogun.
"We need an intelligence network. A map of every allied force still alive in the hive. Their locations. Their numbers. Their ammunition status. Their casualties. Which routes are open. Which routes are traps. Which strongholds can hold, and which need to be evacuated before the enemy surrounds them."
Grey listened carefully. Most of the words made sense individually. Together, they sounded like something far above the level of a man who had been a penal laborer a week ago.
Qin Mo continued.
"Only then can we move effectively. And after that, we upgrade our existing equipment."
Grey scratched the side of his helmet. One part of the explanation had lodged in his mind more firmly than the rest.
"Wait. Our weapons… aren't strong enough?"
"Not even close."
Qin Mo glanced over his shoulder. His eyes gleamed with an intensity that sent a chill through Grey despite the sealed power armor.
"You need to think bigger. What we have now? These are prototypes. Crude tools made from battlefield scrap, built under pressure, with no proper production line and barely enough power stability to trust them for more than a few hours at a time."
Grey scoffed. "Prototypes? This power armor? This grav-shield? You built gear that would make half the spire nobles bankrupt themselves trying to buy it."
He knocked his knuckles against the armor's chestplate.
"This suit could get a man a noble title on some Imperial worlds. The grav-shield alone could start a religious argument with the Mechanicus."
Qin Mo stopped walking.
Grey almost continued, then caught the look on his face.
Qin Mo placed one hand on Grey's shoulder. The gesture was calm, almost brotherly, but his voice carried absolute certainty.
"Trust me, brother. When I complete my masterpiece, when you see what I am truly capable of building, you will understand how weak, inefficient, and improvised our current gear really is."
Grey chuckled, trying to lighten the weight in the air.
Then he saw Qin Mo's eyes.
No doubt. No hesitation. No arrogance either.
Certainty.
The laughter died in his throat.
"…You're not joking, are you?"
Qin Mo did not answer.
He simply started walking again.
Grey followed.
....
One Week Later
Qin Mo did not rush from outpost to outpost.
That decision surprised almost everyone. The soldiers expected him to keep moving like a living reinforcement column, appearing wherever screams were loudest and the line was closest to collapse. Grey expected at least three more reckless rescue missions before Qin Mo remembered that human bodies required sleep. Klein expected an argument, a speech, or some plan that involved flying into enemy territory with six men and a prayer.
Instead, Qin Mo returned to the 47th Regiment's fortress.
And there, he dug.
He carved deep into the ground beneath the fortified hab-block, reshaping ferrocrete, metal, old service tunnels, and abandoned substructure with unrelenting precision. The work did not resemble normal excavation. There were no teams with drills working in shifts, no servitors chanting through labor routines, no enginseers waving censers over complaining machinery.
The hive's bones simply moved.
Walls split where Qin Mo pointed. Reinforcement ribs grew from salvaged steel. Lift shafts were sealed, rerouted, and converted into cargo hoists. Storage bays opened beneath the fortress floor. Ventilation tunnels formed in narrow, angled runs too small for a man to crawl through and easy to seal in an emergency.
Flickering lumen-strips were installed as fast as soldiers could carry them. Excavator machines, half-repaired and stripped of every decorative casing, thudded and scraped in the lower chambers. Men hauled scrap down one ramp and carried finished components up another. The air filled with hot metal, dust, oil, sweat, and the constant vibration of work that did not stop for night, prayer, or fear.
Then Qin Mo locked himself inside the underground facility.
In his absence, the heretics did not attack.
The fortress remained tense, but quiet. Sentries scanned the approaches. Recon drones circled through smoke-choked corridors. Men slept in armor, woke at every distant boom, and whispered that perhaps the cult had finally learned caution.
Then Qin Mo returned.
The assault began before the fortress gates had fully sealed behind him.
Heretic artillery opened first, hammering the outer walls until dust rained from the ceilings. Then came probing infantry waves, suicide bombers, mutant shock troops, and armored vehicles trying to force their way through the kill lanes. Grav-shields flickered over reinforced firing slits. Heavy stubbers roared from hidden nests. Flamers turned narrow approaches into rolling curtains of fire.
The fortress held.
Its walls trembled under the barrage, but did not break. Soldiers fought with desperate resolve, moving through the defensive passages Qin Mo had built, falling back by section, then counterattacking through side corridors when the enemy bunched too tightly. Medics dragged the wounded into lower bunkers. Ammunition teams ran charge packs forward through protected routes. Klein directed the defense from a command chamber that shook with every shell impact.
Qin Mo did not lift a finger.
He heard the battle through the walls. He felt the explosions as faint pressure changes in the facility's structure. He saw casualty reports update on a crude tactical display and watched power reserves dip as defensive systems drew energy.
He ignored it all.
Not because he did not care.
Because the fortress had to learn to survive without him standing on the wall.
And because he had more important work to do.
....
Step 1: Logistics
To save time, manpower, and resources, Qin Mo designed a universal logistics drone.
The first prototype was a ten-meter-wide black sphere suspended above the fabrication floor by anti-grav engines. Its surface looked smooth from a distance, but close inspection revealed armored panels, recessed sensor clusters, manipulator ports, cutting tools, magnetic clamps, welding arms, and intake apertures for raw material. When idle, it hung in the air with unsettling patience, like a mine that had decided to become useful before exploding.
Its purpose was simple. Scavenge anything useful.
A battlefield was wasteful by nature. Every fight left behind broken weapons, ruined vehicles, spent casings, damaged armor, torn wiring, slagged machinery, fuel residue, corpses with equipment still attached, and buildings full of materials no one had time to sort. The Imperium treated most of that as debris until a Munitorum clerk, salvage officer, enginseer, or desperate soldier decided otherwise.
Qin Mo intended to remove the delay.
The logistics drones would recover resources, separate usable material from junk, process raw inputs, and convert themselves into mobile manufacturing platforms when required. A drone could strip a wrecked Chimera for armor plate, copper, actuators, fuel, and power components. It could collect spent lasgun packs, evaluate which ones were repairable, and reject the ones likely to explode. It could gather broken weapons, melt damaged parts, fabricate replacement components, and return functioning arms to the line.
Given enough material, a drone could even manufacture more drones.
Their functions would be governed by a central command intelligence capable of coordinating resource collection according to battlefield demand. It would monitor ammunition expenditure, casualty patterns, damaged equipment, fortress stockpiles, and predicted enemy attack routes. If the eastern bastion burned through heavy stubber ammunition faster than expected, the network would prioritize propellant, casings, barrel replacements, and transport capacity. If a forward unit lost half its shield packs, nearby drones would adjust production before an officer had time to file a request that no one would ever read.
The system could convert select logistics units into mobile manufacturing stations, scale the number of active drones according to need, and keep production moving even when human commanders were too busy being shelled to count crates.
The Adeptus Mechanicus would call it an abomination. The Imperium would call it heresy. Abominable Intelligence. Unlicensed fabrication. Unsanctioned automation. Techno-blasphemy of the highest order.
Heretek. Damnation. Execution by fire, bolt, or whatever method allowed the most chanting. Qin Mo did not care.
Not because he wanted to defy the Imperium for its own sake. Defiance was inefficient. Defiance for ego was even worse. He cared about results, and right now the result he needed was an army that did not collapse because a supply convoy took the wrong tunnel and vanished into a cult ambush.
More importantly, he trusted his creation.
This was not a conventional artificial intelligence built from ancient human machine logic, corrupted scrap-code, or self-optimizing systems with enough freedom to make catastrophic decisions. Qin Mo's command core was anchored in principles he imposed directly into its operating structure. Its logic did not merely run on circuits. It ran inside constraints shaped by material law, locked behind realspace conditions that ordinary technology could not even perceive.
Necron-tier architecture. Star God-derived principles. Physical rules treated as locks, rails, and walls. It would not function under normal conditions without him.
It would not turn against him unless he made the mistake of designing it to do so, and Qin Mo had many flaws, but suicidal stupidity was not among them. And if someone tried to corrupt it through warp sorcery, scrap-code, daemonic whispers, or any other means, the galaxy would learn a valuable lesson.
If you ever feel like the dumbest being in existence and worry no one could possibly make a worse decision, remember this: somewhere, someone once tried to corrupt an artificial intelligence built on Star God technology.
It did not end well for them.
The first logistics drone took shape over three days of uninterrupted work. The second took half that time. By the fourth, Qin Mo no longer needed to assemble every component himself. The prototypes began fabricating support modules for each other, their manipulator arms moving with insectile precision beneath the cold lights of the underground facility.
Once deployed, Imperial logistics in the local theater would change completely.
No more waiting for convoys that never arrived. No more starving men beside piles of unusable scrap. No more abandoned weapons because no enginseer was present to approve repairs. No more strongholds falling simply because the enemy understood supply better than the officers sent to crush them.
Once the first true production batch existed, the system would sustain itself.
That was the first step toward turning survival into war.
....
Step 2: Intelligence and Reconnaissance
The same command intelligence would not merely handle logistics.
It would see.
Qin Mo had learned the Underhive's greatest weapon was not its darkness, its tunnels, or its corruption. It was uncertainty. Imperial forces died because they did not know where their allies were, where the enemy had moved, which routes were open, which vox-signals were false, which strongholds still stood, and which friendly units had already been overrun.
The cult had turned ignorance into a battlefield system. Qin Mo intended to break that system.
He designed an array of reconnaissance assets to operate alongside the logistics network.
Stealth drones the size of servo-skulls, but quieter, faster, and less dependent on sacred components no one could replace.
Surveillance probes small enough to slip through pipe networks, collapsed hab corridors, ventilation shafts, and service ducts.
High-altitude signal nodes where the hive architecture allowed vertical movement, able to relay data across broken vox zones without relying on compromised Imperial channels.
Psyker-detection arrays built from reverse-engineered suppression-collar principles, not perfect, not elegant, but good enough to notice when a Magus, broodmind node, or warp-active asset began interfering with the battlefield.
Thermal mappers. Bio-signature scanners. Vibration sensors. Chemical sniffers for promethium, explosives, corpse gas, and Tyranid biological residue.
None of them were individually miraculous. Together, they would form an intelligence net over every district Qin Mo could reach.
Terrain. Enemy positions. Allied troop concentrations. Ammunition caches. Water reserves. Fuel stores. Artillery batteries. Hidden tunnels. Collapsed routes. Civilian clusters. Supply depots. Strongholds under pressure. Strongholds already dead.
All of it would feed back into the command core, then into battlefield displays, squad armor, fortress command rooms, and portable devices carried by officers who needed information more useful than prayer and static.
With this network in place, his forces would not stumble from crisis to crisis.
They would choose where to fight.
They would know when to reinforce, when to withdraw, when to strike, and when to let an enemy assault bleed itself against walls designed to kill it.
For the first time since the offensive collapsed, the surviving Imperial forces in the Underhive would have something resembling eyes.
....
Step 3: Weapons and Warfare
This was what truly excited him.
Not just new weapons. New doctrine.
The Imperium fought wars with courage, mass, tradition, and logistics so vast that waste became invisible until the bodies piled high enough to count. It could grind enemies down because it had more men, more guns, more worlds, more time, and more willingness to spend all of them.
That worked on a galactic scale. It did not work here.
Here, in the buried rot of Tyrone Hive Primus, Qin Mo did not have endless regiments to throw into kill zones. He did not have forge worlds feeding him tanks, orbital supremacy, cathedral-sized command engines, or priests blessing every shell before it was fired. He had frightened soldiers, broken strongholds, limited ammunition, hostile terrain, a Genestealer Cult with hidden industry, and a war machine that had already gutted the Imperial offensive once.
So he needed a different paradigm.
Every soldier had to become harder to kill. Every squad had to become more mobile. Every weapon had to justify its weight, power draw, maintenance burden, and tactical role. Every fortress had to function as a logistics node, command post, medical station, sensor hub, and killing ground.
Every drone had to reduce the number of human beings wasted on tasks machines could perform better, faster, and without fear.
Qin Mo's future army would not simply hold trenches and wait for the enemy to exhaust itself. It would see first, move first, strike first, and resupply before the enemy understood what had changed.
Gravity shields would make conventional solid-shot weapons unreliable.
Power armor would keep ordinary soldiers alive long enough to act like elite troops.
Integrated jump packs would allow rapid reinforcement across broken hive terrain.
Anti-psyker emitters would deny the cult's hidden Maguses the freedom to manipulate commanders, assassinate officers, or turn battlefield panic into mass collapse.
Combat drones would suppress enemy infantry. Medical drones would stabilize the wounded before blood loss became a death sentence. Recon drones would map ambush routes. Cargo drones would move ammunition under fire. Shield drones would provide mobile cover for infantry advances. Mine-clearance drones would go first and die usefully, which was more than could be said for most Imperial operational planning.
Weapons would be chosen for function, not glory.
Flamers for tunnels.
Meltaguns for armor and sealed doors.
Heavy stubbers for massed infantry.
Hellguns and compact energy weapons for armored squads.
Directed charges for choke points.
Automated turrets for places where human sentries would otherwise fall asleep, panic, or die.
And beyond all of that, Qin Mo wanted something greater. A military doctrine built around total battlefield dominance, not through brute numbers, but through information, mobility, protection, and controlled violence applied exactly where it mattered.
Something beyond the Imperium's rigid habits.
Something the cult could not predict because no Imperial commander in this theater had ever fought that way.
He stood alone in the underground fabrication chamber, surrounded by half-assembled drones, suspended armor frames, unfinished weapon housings, and the low hum of systems that would have gotten him burned alive by the Mechanicus if anyone with authority understood what they were seeing.
Above him, the fortress shook under another distant barrage. Dust drifted from the ceiling. Warning runes flickered across a crude display. Somewhere far overhead, men were fighting and dying behind the walls he had built.
Qin Mo did not look up.
His hands moved through the air. Metal answered. Circuits aligned. Components locked into place. A drone's optics flickered awake, dim and obedient.
This was only the beginning.
When he was done, the battlefield would never be the same again.