Counter-Battery on the Silt

The river smelled of wet clay, boiled horse hide, and burnt sulfur. On the gravel spit of the Oued-Ziz, seventy-four seconds was the difference between an intact battery and a heap of torn woolen tunics.

I counted sixty-one when the next mortar bomb shrieked over the northern bluff. The iron sphere took the brown current thirty paces upstream, throwing a plume of red mud that rained across Gun Three's bronze casing. A jagged shard of casing clanged off our trail-spade, chipping flint from the riverbed.

"Twelve seconds to their reload," I shouted over the rapids, wiping grit from the objective lens of my primary brass quadrant. "Captain! If we stay limbered on this bar, their fourth increment cuts our teams in half."

Captain Larbi-ani stood waist-deep in the foam, his copper-frogged coat soaked black, hauling on the lead trace of Gun Two. Behind him, two more bronze twelve-pounders of the 4th Grand Battery churned through the shallows, their crews heaving on spokes to clear the quick-silt channel.

"We have no line of sight to their pits!" Larbi-ani shouted back, boots slipping on the limestone ledge. "The bluffs are two hundred yards of solid granite! We cannot elevate bronze through forty cubits of bedrock, Belkacem!"

"We do not shoot through it," I said, unbuckling the iron-banded stake case from the limber chest. "We curve the iron around the shoulder. Traverse all four carriages onto the spit. Hub to hub, eight paces apart."

Mourad-bara sloshed onto the bar, dragging the sixteen-pound sledgehammer through the shallows. Cordite and river silt caked his jaw, the burn scars on his forearms pale against dark skin. He grounded the hammer with a dull clatter.

"Tell me you brought a fresh green rod, Spotter," Mourad rasped, squinting up at the rim where the violet tourmaline mirror caught the sun. "That number four stake in your case looked like an old tooth when you oiled it at midnight."

"It has eight chevron fractures," I said, lifting Tourmaline Stake #4 from its sheepskin wrap. The pale green cylinder was fourteen inches long, capped in silver ferrules with the three sheared vernier notches I had logged yesterday. Under the sun, internal fissures showed like frozen cobwebs. "Rule five of the Ordnance manual: five tubes linked to one conduit causes instantaneous crystalline resonance rupture. Four tubes is within tolerances."

"Barely," Mourad grunted. "And if your arithmetic drops half an inch?"

"Then sixty fragments of green glass punch through your ribs before the concussion deafens you," I said. "Hold the iron guide collar. Keep it vertical."

Mourad spat dark tobacco into the brown current, knelt on the gravel, and locked his calloused hands around the tripod sleeve. I set the steel shoe into the silt, centering the plumb-bob against the leveling mark.

"Drive it three inches past the bed-gravel," I said. "One blow per count. Do not tilt the ferrule."

Mourad swung the hammer. The impact drove the stake into the silt with a ringing crack. Water spurted from the gravel seam. He struck three times more, driving the ferrule into the bedrock shelf until the spirit bubble rested dead center in the brass vial.

Across the gorge, eighty yards downstream, thousands of retreating infantrymen still struggled through the waist-deep ford. High on the cliff rim, at azimuth three-forty, the enemy's twelve-inch tourmaline mirror pivoted three degrees south, locking onto our spit.

"They have our range," Larbi-ani said, clambering onto the gravel. He drew his saber. "Guns One, Two, and Four unlimbered! Trail-spades into the silt! Form battery front on Gun Three!"

The gunners moved with the numb speed of men who could hear the clock in the sky. Bronze axles groaned as seventy men heaved against the wheels, locking four field guns into a tight row across the gravel bank.

I crouched beside the stake, unfolding my leveling slate and sliding chalk between bruised fingers. The math was simple, unforgiving geometry. The enemy redoubt sat in defilade behind the northern bluff, three hundred and forty yards beyond the cliff lip, completely hidden from direct bore-sight. But mortar bombs were parabolic. To sustain a rapid rate of fire, their powder caissons had to sit in the open depression directly behind the ridge.

"Cliff rim elevation, thirty-two degrees," I muttered, marking the figures on slate. "Deflection corridor must clear the granite shoulder by twelve paces. Arc curvature, eighteen degrees west. Elevate tubes to forty-one degrees. Full six-pound charges. Pyrite-cast solid shot."

"Forty-one degrees?" Larbi-ani stared at me. "Field twelve-pounders are direct-fire pieces! At forty-one degrees the breech-wedges bottom out in the dirt!"

"Dig out the spade trenches beneath the trail-ends," I answered. "Two feet of clearance. If the tubes do not point forty-one degrees into the sky, the deflection field cannot catch the shot before the flight momentum decays."

Mourad shoved an iron shovel into the hands of two loaders. "You heard the clerk. Dig, or drown in iron."

The crew dug furiously, flinging wet sand into the current. Four trail-spades settled into the dredged slots, tilting four long bronze muzzles skyward.

I set the primary brass split-glass quadrant onto the muzzle ring of Gun Three, sighting the mirrored hairline against the silver ferrule of the tourmaline stake. I moved down the line, tapping the bronze cheeks with my leveling rod, adjusting elevation screws until all four bores aligned with the optical corridor.

The air around the green rod began to hum—a high, dry vibration that raised the short hairs on my arms.

"Forty seconds since their last discharge," Larbi-ani called, watching the cliff rim.

"Sponge and load!" Mourad bellowed.

Loaders rammed four wool cartridges of black powder down the bronze throats, followed by greased wads and the heavy thud of pyrite-cast iron balls. Four priming quills were thrust into touchholes. Four gunners stepped back, lanyards pulled taut.

The tourmaline stake trembled in the silt. The eight chevron fractures began to glow with faint phosphor-blue light, drawing kinetic tension from the iron muzzles aimed into its refractive cone.

"The rod is heating," Mourad muttered, uncapping his canteen. "Smells like boiling pickled cabbage in a burning barracks."

"Pickled cabbage never had a forty-percent chance of driving glass daggers through your windpipe," I said, thumbing the quadrant's locking screw. "Douse the ferrule. Brine only. Do not touch the crystal."

Mourad poured salty river water over the bronze sleeve. The liquid boiled instantly, hissing into white steam that curled past my chin.

Above us, the cliff edge went silent. The seventy-four seconds were up.

"Captain," I said softly.

"Battery!" Larbi-ani raised his saber. "On my mark. All four lanyards on the single beat. Fire!"

The saber slashed down.

Four friction quills struck as one. A monstrous thunderclap tore across the river gorge.

A wall of white smoke and yellow muzzle flash slammed into the gravel spit, kicking river spray into our faces. The recoil hammered down through the carriage wheels, burying the trail-spades six inches deeper into the gravel.

Through the smoke, I watched the four iron cannonballs leave the muzzles.

They did not fly straight. As they crossed the invisible magnetic cone anchored to the green stake, the iron shot bent violently. An arc of pale blue ionization rippled across the sky, wrapping the spheres in refractive haze as they curved around the granite shoulder of the bluff, disappearing into the defilade.

For four seconds, the river held its breath.

Then the earth beneath our boots bucked.

Behind the northern cliffs, a deep roar tore through the canyon. A massive tower of black smoke and orange flame erupted three hundred feet into the air, blowing shattered timber and fragmented bronze mortar barrels across the skyline. The concussion wave rolled down the cliffs, slapping the river into white foam.

On the high rim, the enemy's twelve-inch tourmaline mirror shattered, knocked from its tripod by the blast, tumbling down the cliff face in twinkling shards.

Along the river shallows, thousands of retreating soldiers stopped, staring in disbelief at the smoking crater above the bluffs, before breaking into a ragged cheer as the crossing surged forward.

"Direct hit on their reserve caissons," Larbi-ani whispered, lowering his saber with shaking fingers. "Gods of the Crescent... we silenced them."

I didn't cheer. I dropped to my knees on the gravel spit and leaned over the tripod.

Tourmaline Stake #4 was smoking. The green crystal had turned a dark cherry-red, radiating heat like an unquenched horseshoe. Down its western flank, running straight from the engraved silver cap to the steel ferrule, was a fresh vertical split wide enough to slide a thumbnail into.

Mourad crouched beside me, the empty canteen dangling from his fingers. His grin vanished as he saw the stone.

"Can it take another round, Spotter?" he asked quietly.

I touched the brass collar with the tip of my iron compass. The crystal groaned under the touch, a tiny flake of glass pinging off my knuckle.

"If we drop another lanyard on this rod," I said, "it doesn't deflect. It detonates."