Chapter 19 : Fortification
The northern wall rose three centimeters an hour.
Nash stood at the base and watched Sigma-9's servitors stack ferrocrete blocks with mechanical regularity — lift, place, seal, repeat. Each block weighed forty kilograms. Each row added another line of defense between six hundred and eighty people and fourteen hundred Orks who wanted them dead.
Three centimeters an hour. Twenty-four hours a day. Ten days.
"Seventy-two centimeters per day. In ten days, the north wall gains seven hundred and twenty centimeters. Seven meters of additional height, if I can keep the servitors running at capacity and the power generator doesn't fail and the ferrocrete supply holds and nobody trips over a cable and breaks a servitor's locomotion unit."
"I used to calculate sprint velocity for software teams. Story points per iteration. The math is the same. The stakes are different."
[SETTLEMENT NODE — FORTIFICATION ASSESSMENT]
[NORTH WALL: CURRENT HEIGHT 2.4M → TARGET 4.0M — 10 DAYS AT CURRENT PACE]
[WEST WALL: CURRENT HEIGHT 2.8M (REINFORCED POST-BREACH) → TARGET 4.0M — 12 DAYS]
[KILL ZONES: 3 OPERATIONAL — EXPANSION TO 5 POSSIBLE WITH MATERIAL REALLOCATION]
[AMMUNITION RESERVES: 12,400 POWER PACKS (42 DAYS PRODUCTION STOCKPILE)]
[SURVIVAL PROBABILITY AT CURRENT FORTIFICATION: 23%]
Twenty-three percent. The system didn't soften its assessments. Nash appreciated that — the cold mathematics of survival kept him honest when optimism tried to creep in.
The compound moved at a pace Nash hadn't seen since the first battle's preparation. Every able body worked — civilians hauling rubble, soldiers digging fire trenches, Korvak's tech-acolytes welding armor plates onto the gun emplacements. Priscilla coordinated work crews from a makeshift office near the eastern gate, her data-slate tracking shift rotations, supply consumption, and the daily calorie requirements of a population operating at maximum physical exertion.
"Wall section seven needs additional bracing," Nash told Sigma-9, pointing at a segment where his system overlay showed stress concentration. "The load distribution is uneven — the foundation settles faster on the east side. If we don't shore it up, it'll crack under sustained bombardment."
Sigma-9's optical lenses rotated through three configurations in rapid succession. "Your assessment is correct. The settlement differential is measurable." Her middle lens focused on Nash. "You identified this from visual inspection alone?"
"Experience. The purifier bypass had similar load issues." The callback to his first technical controversy — the water purifier from those desperate early days — served double duty. It reminded Sigma-9 that his knowledge had proven functional before, and it provided a plausible chain of learning rather than spontaneous expertise.
"I will assign a servitor to reinforce the foundation. Your recommendation for bracing?"
Nash sketched it on his data-slate — the system's optimal design, degraded by two deliberate suboptimalities to reduce that troublesome STC correlation Sigma-9 tracked. "Cross-beams at forty-degree angles, not forty-five. Easier to construct with available materials."
"Forty-five degrees would be perfect. Forty degrees is good enough and looks like a human approximation rather than a machine calculation. The art of hiding is being almost right."
Sigma-9 examined the sketch. Her smallest lens whirred — the analysis function Nash had learned to identify. Whatever conclusion she reached, she kept it in the binaric files she shared with Korvak but not with Nash.
"Acceptable," she said, and turned to direct her servitors.
Volkov's training ground sounded like a war before the actual war arrived.
Las-fire crackled in controlled bursts — three-round volleys, the rhythm Volkov had drilled into two hundred and twenty combatants through four weeks of relentless repetition. The Commissar stood at the firing line's edge, greatcoat folded over his arm, sleeves rolled to the elbow, his voice carrying across the range with the projection of a man who'd spent nineteen years turning civilians into soldiers.
"Again. Tighter grouping. You — the tall one — your stance is wrong. Brace the stock into your shoulder, not against it. The weapon is an extension. Treat it that way."
Nash paused at the range perimeter and watched. The transformation was visible — not in the soldiers' marksmanship, which was still mediocre by Guard standards, but in their discipline. They moved as units. They responded to commands without hesitation. They stopped, shot, and advanced in coordinated sequences that two weeks ago would have dissolved into panicked scrambling.
Volkov's contribution. The man Nash had feared, then resisted, then maneuvered around — the hostile investigator with forty-seven pages of documented anomalies and the legal authority to execute him — had become the settlement's single most effective military asset.
"I hired a man whose job was to fire me, and he's turned into my best department head. Corporate irony doesn't translate well to the grimdark future."
Volkov noticed Nash watching. Their eyes met across the range — no hostility now, no accusation, just the mutual acknowledgment of professionals who'd moved past their disagreements because the deadline didn't care about politics.
After the drill ended, Volkov walked to Nash's position. Sweat darkened the collar of his uniform. His hands — those steady, controlled hands that Nash had noted in their first meeting — carried the calluses of someone who'd been handling weapons alongside the troops rather than merely supervising.
"Casualty projections." Volkov produced a folded paper. "Based on current training levels, fortification status, and estimated enemy strength."
Nash took it. The numbers were handwritten — Volkov's precise script, each figure derived from the Commissar's own considerable tactical experience.
"Forty percent attrition in the first twenty-four hours. Sixty percent by hour forty-eight. Settlement falls in seventy-two if no significant defensive advantage materializes."
Nash's system had calculated similar figures. The convergence was uncomfortable — when the optimist's AI and the pessimist's experience reached the same conclusion, the conclusion was probably accurate.
"Agreed on the timeline. Disagreed on the outcome."
"You have something the math doesn't account for?"
"Several things. Expanded kill zones, improved ammunition stockpile, and Korvak's gun emplacement modifications. I'll have updated projections by morning."
Volkov studied him. That evaluating stare — Nash had endured it for weeks, the weight of a man who saw through facades as easily as breathing. But the quality had changed. Less interrogation, more assessment. The Commissar wasn't looking for heresy anymore. He was looking for competence.
"Get some sleep, Garrett. You're no use to anyone with a brain running on four hours."
"Three."
"Worse." Volkov turned toward the barracks. Paused. Reached into his coat and produced a metal canteen — field-issue, battered, steam rising from the lid. "Recaf. I had some put aside."
He set the canteen on the range barrier and walked away without waiting for acknowledgment.
Nash picked it up. The recaf was hot, bitter, and tasted like someone had brewed engine coolant through a filter made of bark. It was magnificent. The first genuinely warm drink Nash had consumed in this universe — the settlement's supplies ran to water and cold rations, and hot beverages were a luxury nobody had prioritized.
He drank it standing at the training range, watching the last light die over walls that weren't tall enough, and allowed himself thirty seconds of something dangerously close to gratitude.
Day eight.
The scouts stopped reporting.
Vasquez brought the news at 0600 — three reconnaissance teams, six soldiers, all overdue by twelve hours. The standard protocol was four-hour check-ins. Twelve hours of silence meant one of three things: captured, killed, or running for their lives through terrain too dangerous for vox transmission.
"Last contact was team two," Vasquez said. His face carried the rigid control of a man delivering bad news without letting it affect his professional function. "Grid reference seven-seven-four. They reported Ork scout elements — fifteen to twenty — moving south at speed."
"South toward us."
"Toward us. And fast. Faster than our ten-day estimate."
Nash pulled the tactical map from the planning table. The system overlaid Ork movement projections — updated with the new data point, the assessment shifting in real-time.
[THREAT REASSESSMENT]
[ORK ADVANCE SPEED: REVISED UPWARD — VANGUARD ELEMENTS AT 18KM/DAY]
[ESTIMATED CONTACT: 2-3 DAYS, NOT 10]
[MAIN BODY FOLLOWS VANGUARD BY 24-48 HOURS]
"He's not marching at standard pace. He's running. Gorgrim is sprinting his horde south because he doesn't want to give us time to prepare — and he's right not to. Every hour we fortify, his odds get worse."
"Call the council."
The command post filled in four minutes. Corso, Priscilla, Sigma-9, Marcus, Volkov. Six faces around a table covered in maps and the debris of ten days of fortification planning.
"Gorgrim is moving faster than projected. Scouts are gone — probably dead. Vanguard elements in two days. Main body in three to four."
Corso's expression tightened. "The walls aren't finished."
"The north wall is at three-point-two meters. The west wall is at three-point-four. Kill zones four and five aren't operational." Nash tapped the map. "We work through the night. Both nights. Every hand, no exceptions."
"The workers are exhausted," Priscilla said. "Double shifts for ten days. People are making mistakes — two construction injuries yesterday, one serious."
"I know. Stimulants for critical crews. Marcus, I need your people maintaining morale through the push. Sigma-9, redirect all servitors to wall construction — pause manufactorum output."
"Pausing production reduces ammunition reserves."
"We have twelve thousand packs. That's enough for the first engagement. Walls matter more than bullets if the bullets don't stop them before they reach the walls."
Volkov hadn't spoken. He stood at his position near the door — closer to the table now than he'd ever stood before, close enough that his shadow fell across the tactical map.
"Night shifts," the Commissar said. "I'll supervise personally. The troops know my voice. They'll work."
"He's not offering oversight. He's offering labor. His presence, his authority, his voice — deployed not to investigate or punish but to build."
Nash met his eyes. "Thank you, Commissar."
Volkov nodded. Brief. Economical. And left to organize the night crews before Nash finished the briefing.
Nine days of preparation. They'd gotten eight.
Nash crossed off another day on the calendar scratched into the command post wall. Nine marks. The last one, still blank, would be tomorrow.
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