At sunrise, the outer edge ditch smelled of burnt lime, pine resin, and the metal tang of frozen wolf blood. The carcass of the scarred alpha wolf lay stiff in the trench, its white fur rimed with hoarfrost, eyes sealed shut by white bitter-salt crust.
Giles Croft stood on the western narrow high walkway, his brass sighting scope leveled on its ash tripod. Through the thirty-power telescope, he swept the northern ridgeline.
Two miles away, along the crest of the dark rock escarpment, movement stirred beneath the frozen pines. Dozens of pale shapes paced through the timber, their blue crystal-clear spines catching the first rays of the dawn sun like a field of jagged sapphires. The scouting probe had been an exploratory test. The main pack was massing.
Giles lowered the instrument and checked his pocket ledger.
A glowing amber screen window hovered before his eyes.
“A forty-wolf raid wave,” Giles muttered, jotting down vector counts on grid paper. “Total moving mass exceeding eight thousand pounds. If forty units strike that listing timber at thirty miles per hour, the dynamic impulse exceeds eighty thousand foot-pounds. The posts will shear at the soil line before my pawns can loose three arrows. Passive timber is fully non-viable against high-thickness mob spawns. Time to make up active area-denial hardware.”
Giles folded his tripod, hoisted the dark wood case. Then he marched down the narrow high walkway ladder toward the sawpit workshop.
Master Joiner Caleb and Captain Kenneth Drake were already at the workbench, their faces grim in the morning mist. Borin Bronze-Lung sat upon an overturned nail keg. He used a three-sided bastard file to dress the teeth of a felling axe.
“Lord Giles,” Kenneth said, stepping forward. His scarred cheek was pale from lack of sleep. His knuckles were tight around his iron-shod measuring rod. “Orson says the ridgeline pack numbers at least thirty or forty beasts. The five scouts that escaped will lead them directly back to the listing spruce posts. We need three hundred men with heavy pikes to hold that breach. We have fourteen conscripts who barely know which end of a spear enters the enemy.”
“Fourteen conscripts with pikes would simply provide eighty pounds of meat per wolf,” Giles said dryly. He set his ledger on the bench. “We’re not meeting eight thousand pounds of moving driving force with human muscle. That violates basic civil safety principles. Borin, where is the scrap copper from Bailiff Skag’s impounded cargo wagon?”
Borin spat a dark stream of chicory juice into the shavings. “Behind the forge shed, lad. A sheet of heavy rolled kettle copper, two feet square. A keg of clipped horseshoe nails Skag was hauling to the southern smithies.”
“Bring the copper sheet, the nails, two pounds of pine pitch, and five pounds of your coarse black blasting powder,” Giles ordered. “Caleb, I need four box-shaped wooden housings. Twelve inches wide, eight inches high, four inches deep, framed from dry one-inch pine boards with sliding back panels.”
Caleb seized his joiner’s saw and marked a pine board. “Consider it done, Lord Giles.”
Giles cleared the workbench and laid out his tools. A ball-peen hammer, a hardwood shaping block carved with a smooth ball-shaped depression, a pair of sheet-metal shears, and his folding wooden ruler.
Kenneth Drake leaned over the bench, watching with intense, narrowed eyes.
“Lord Master builder,” Kenneth whispered. He watched Giles trace an arc across the reddish metal with a steel scribe. “Are we forging a magic charm? An apotropaic ward to banish the cold?”
“It’s an aimed fragmentation mine, Kenneth,” Giles said, aligning the shears along the scribed line. “Or in colony-sim terminology, a traffic-calming mat. If secret entities enter the town right-of-way, this device delivers an immediate moving correction.”
SNIP. SNIP. CLANG.
The heavy shears cut the copper into a twelve-inch by eight-inch rectangle. Giles placed the sheet over the concave hollow in the hardwood block, took the ball-peen hammer. Then he began striking the metal with rhythmic, circular blows.
CLINK. CLINK. CLINK.
Under his careful strikes, the flat copper yielded, curving inward into a shallow, uniform dish. Giles stopped every twelve strokes to measure the curve with his wooden ruler, ensuring the concave depression kept an exact three-quarter-inch sagitta across the face.
Kenneth leaned closer, his breath catching in his throat.
To Kenneth’s eyes, this was no simple metalworking. The veteran had stood beside royal circle-mages in three border sieges. He had watched sorcerers draw fine, detailed summoning circles with powdered silver, chanting for hours to focus surrounding aether into crude explosive orbs that wobbled in the wind.
Yet here was the Lord Master builder, cold-eyed and silent. He used an iron hammer to beat the curved mirror of heaven into base metal.
“The curve,” Kenneth murmured, pointing with a trembling finger. “You’re bending the plate... Like the curved burning-mirrors of the Sun Cult.”
“It’s a Misznay-Schardin explosive lens,” Giles explained, running his thumb across the smooth copper concavity. “If you detonate a brick of black powder in open air, ninety percent of the blast energy dissipates in an isotropic blast wave—a useless sphere that wastes force in every direction. But if you place a high-speed propellant behind a concave metal plate, the blast wave is constrained. The expanding gas accelerates the plate forward, inverting the curve and focusing the blast into a tight, expanding sixty-degree level fan.”
Giles set the curved copper plate inside Caleb’s pine housing.
Behind the copper plate, Giles packed four and a half pounds of granular black blasting powder, tamping the dark rotten-egg grains with a wooden dowel until the thickness reached two grams per cubic half-inch. Behind the powder, he seated a dry oak backing block, two inches thick, secured with heavy iron screws through the timber casing.
Then Giles turned to the front face of the plate.
He melted two pounds of sticky pine pitch in an iron skillet over Borin’s fire bowl, mixing the molten resin with three handfuls of fine, dry unslaked burning lime powder. While the resin was hot and thick, sticky, Giles poured it directly into the concave hollow of the copper dish.
“The payload,” Giles said, gesturing toward Borin’s iron keg. “Four hundred clipped nails. Borin, help me set them.”
Working with rapid care, Giles and Borin pressed four hundred sharpened iron nails into the molten pitch, point-outward, arraying them in dense, nested rows. As the resin cooled. The nails were locked into a solid, bristling metal mosaic, glued fast against the copper plate.
“Four hundred iron teeth,” Borin breathed, rubbing his charcoal-stained beard. “Bedded in pitch and lime. When the powder catches, what happens to the nails, lad?”
“They speed up at Mach two-point-eight,” Giles said calmly. “Roughly three thousand feet per second. At twenty paces, each nail delivers four hundred foot-pounds of striking force. The burning lime powder matrix vaporizes into a skin-burning fine mist cloud that blinds whatever survives the shrapnel. Nothing with flesh and bone can cross that cone.”
Giles reached into his lapel. Then he pulled out a small pot of waterproof vermilion lead paint and a camel-hair brush.
Across the front wooden rim of the housing, directly beneath the bristling array of four hundred iron nails, Giles painted bold, crisp royal letters:
Kenneth Drake fell to one knee beside the workbench. His eyes were wide with total, terrifying discovery.
He traced the crimson letters with a shaking fingertip. His voice dropped to an awe-struck whisper.
FRONT TOWARD MONSTER.
“It’s... A binding command,” Kenneth whispered, his heart hammering against his ribs like a war drum. “A sovereign edict carved upon the face of the weapon. You have commanded the wrath of the blast to look only upon the enemy... Forbidding it from turning back upon the righteous.”
Giles paused, the paint brush hovering in mid-air. He looked at Kenneth, whose face was pale with religious veneration.
“It’s an orientation indicator, Kenneth,” Giles sighed, dipping the brush in turpentine to clean the bristles. “If a colonist sets the box backward during deployment, the two-inch oak backing block won’t stop the back-blast from blowing their legs off. It literally means: point this side at the target so you don’t kill yourself.”
“A command of divine discernment,” Kenneth repeated, nodding fervently, fully deaf to Giles’s mundane explanation. “The holy seal that guides the hand of judgment.”
“Right. Whatever keeps you from pointing it backward,” Giles muttered. “Toby! Bring the scissor-leg timber stakes and two spools of fine copper wire.”
By midday, Giles, Kenneth, and Toby had assembled four matching Directional Shrapnel Ward-Pads.
They carried them out through the western gate into the 150-foot clear-cut defensive zone. Giles didn’t place them randomly. He used his brass sighting scope. He sighted the approach lanes from the northern timber, calculating the overlapping fields of fire.
He drove paired scissor-leg ash stakes into the frozen mud thirty paces in front of the listing wooden wall, mounting each twelve-inch wooden box eighteen inches above grade, tilted slightly downward at a three-degree depression angle.
“Three degrees of downward pitch,” Giles showed, adjusting the thumbscrews on the mounting stake. “That ensures the expanding shrapnel fan sweeps from ground level to four feet high between ten and forty yards. No dead zones beneath the line of fire.”
Behind each pad, Giles ran a fine, tensioned copper trip-wire across the frozen grass, suspended four inches off the ground by small notched willow pegs. The wire connected to a spring-loaded flint-and-steel friction striker seated inside an oil-cloth sleeve in the mine’s flash channel.
“Hair-trigger tension,” Giles cautioned Toby, who was gently securing the copper wire to a dead tree root. “Ten ounces of lateral pull trips the spring. The striker scrapes the pyritic flint, drops sparks into the priming flash-pan. The powder ignites in eight split seconds.”
Kenneth knelt in the frozen grass beside the second pad. He measured the angle with his ten-foot iron-shod rod. His eyes swept across the sixty-degree cleared sector.
“An overlapping crossfire,” Kenneth whispered, awe and tactical understanding blending in his scarred face. “Four pads, each covering sixty degrees. Together, they sweep the entire western ditch. If the pack charges the leaning wall, they must cross the fan of all four mirrors.”
“It’s standard town crowd control,” Giles said. He wiped red paint from his fingers with a rag. “If thirty wolves charge this sector, the lead units trip wire one. The first mine detonates four hundred iron flechettes into the vanguard. The blast wave and shrapnel break their moving driving force forty paces before they touch our timber.”
Giles stood upright, checking the camouflaging. Toby had scattered dry dead bracken and brown moss over the trip-wires and housings. That left only the bristling copper faces aimed into the gray northern mist.
Kenneth Drake stood beside Giles, his hand resting on the handle of his broadsword. He looked out toward the dark forest with a calm, hungry confidence that had been absent for weeks.
“Let them come,” Kenneth said softly, a wolfish grin touching his scarred lips. “Let forty of the glacier’s hounds come down from the ridges. They will find that the Lord Master builder has sown the earth with iron teeth.”
“Let them trip the wire before five o’clock,” Giles said, checking his pocket watch. “I have no desire to conduct a post-blast load-bearing check in the dark.”
As they turned to walk back toward the wooden wall gate, the wind suddenly died.
A dead, unnatural stillness seized the valley. The murmuring pine boughs went silent. The gray clouds overhead turned the color of bruised iron.
Then, a single drop of water on the narrow high walkway rail froze solid into white rime before Giles’s eyes.
From the high northern peaks, a wall of ice-slow fog, thick and blue as frozen smoke, swept down across the forest canopy. The heat didn’t decline—it fell off a cliff, dropping twenty degrees in ten seconds.
The first hard freeze of deep winter had arrived.