By evening the Maritsa was dark. Ash and debris drifted downstream. The north-bank camp’s earthworks were shallow, some of its walls were only planks, and the powder lay too close to the batteries.

  Constantine stood in a watch-tower of green wood. It creaked in the wind. The rail was cold under his glove.

  From the tower he could make out the far bank in pieces: reeds near the water, then darker ground behind them, and beyond that the low shape of Philippopolis. The town was quiet from this distance. No banners were visible. Smoke still rose from several points inside it.

  Closer to the river, the south-bank bridgehead showed in patches through the dusk—mantlets, pikeheads, men packed behind the works in churned mud.

  More lights appeared along the opposite bank. At first he took them for a few scattered torches, then saw others further back in the mist. They were too broken by fog and distance to count with confidence.

  A musket cracked from across the river, then another. For one brief, foolish moment he thought of a phone screen and the old reflex of widening the image with two fingers.

  Below, the camp was still at work. Men carried stakes and planks toward the river line. Hammers sounded from the forward works, sometimes one at a time, sometimes in bursts. Wagons labored through the churned ground and had to be pushed clear where the wheels stuck. At the nearer posts, sentries changed over with brief words and a repeated count of men, tools, and powder. No one was idle for long.

  Far to the right, along the north bank, Serbian horse were already moving upriver. They were acting as scouts and screens, with torches kept low and hooded. Constantine watched until the fog hid them, then turned back to the lights on the far bank.

  Boots thudded on the ladder behind him. Andreas climbed up quickly. Frost clung to his beard. His cloak was damp from the night air.

  “More than seven thousand across, Basileus,” he said. “The box is forming. Kallistos has the lanes clear and the works going up.”

  Constantine kept his eyes on the river. “And the town?”

  “The riverward quarter is secured. A tagma and five hundred Bulgarians went in. We lost a few in the alleys. A couple hundred Azaps were inside. They fought long enough to slow us, then slipped out south.”

  Andreas was quiet for a moment. Then he said, “The town’s as we expected. Parts of it are burned out.”

  Constantine kept his eyes on the town. “They’re making sure we can’t winter easy,” he said.

  “Aye,” Andreas said. “They want us in mud and canvas, or spending weeks cutting and hauling.”

  Constantine kept his eyes on the town. “At first light we take stock. What can be used, we use. What needs repair, we repair. What’s gone, we rebuild.”

  Andreas looked toward Philippopolis.

  “I expected more resistance at the crossing,” he said. “If they meant to stop us, that was the place.”

  Constantine watched the torches near the willows. “They’ve learned what the guns do,” he said. “Or they’re waiting.”

  Andreas spat over the rail. “We’re still split.”

  “Yes.”

  Constantine turned from the river and made himself look down into the camp, into the places where order lived. “Double the patrols here. Triple them on the south bank. No fires outside the screens.”

  Andreas nodded. “Already issued.”

  “Good. No one sleeps without boots on. If something stirs, I want to hear it before it reaches the ditches. Inner cordon armed. Pyrvelos teams awake and dressed on both sides.”

  “They’ll be ready,” Andreas said. On the nearest earthworks, sentries stamped their feet against the cold.

  Constantine looked once more over the Maritsa. Torches still showed on the far bank. He wondered how many men were watching back and counting the fires in his camp. The wind off the river cut through his cloak. “Then we wait,” he said.

  Andreas saluted briefly and went down the ladder to relay the final orders. Constantine stayed in the tower a moment longer.

  At last he went down and lay in his tent fully dressed, with his boots laced and his sword belt within reach. Sleep came lightly.

  The horn that woke him sounded wrong: one blunt note, a break, then another horn answering out of time. Shouts rose through the lanes, raw with sleep and fear. Canvas snapped. A mule screamed.

  Constantine opened his eyes to darkness and the yellow light under the tent flap. He had slept in his boots, and the leather was stiff with cold.

  He was on his feet at once. He kissed the cross at his throat and pushed out into a world of running torches.

  Men stumbled into armor half-fastened. Officers shouted alignment. Someone tripped over a rope and hit the ground hard, cursed, got up again as if falling were a luxury.

  A young officer ran toward him, face grey, breath tearing.

  “Majesty, Serbian horse, upriver—”

  “Speak clean,” Constantine said, stepping close enough that the boy had to meet his eyes.

  “They were hit, ambushed, came back under heavy losses.” Words tumbled. “Horse, lots of it, coming downriver in the fog. On this bank.”

  “Where is General Andreas?” Constantine said.

  The officer’s eyes darted helplessly through the moving fire.

  Constantine did not wait. “Sound the full alarm, in God’s name, move. Fire the signal, warn the south bank.”

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  The officer spun away. Before he had gone three steps, a deeper roar rose from the fog upriver: many hooves on wet ground. A few Pyrvelos shots answered, quick and uneven at first, then steadier.

  Constantine stood still for a moment and listened.

  Boots hammered behind him. Andreas came out of the dark with his cloak half-on, his belt still loose, one gauntlet in his hand. His face was tight, and his breath came white in the cold.

  “Where?” he demanded.

  “Upriver,” Constantine said. “Serbs hit. Horse on this bank, coming down in the fog.”

  Andreas’ eyes sharpened. “Then they’ll go for powder and animals.” He snapped at a runner, “Gun park, wake it. Double guard on powder. Close the inner lanes!”

  “Signal Adata,” Constantine said. “Hold the south-bank box.”

  “Five minutes and I’ll have men on the gun park.”

  “No chasing,” Constantine said. “Repel and hold until we see the whole shape.”

  Andreas gave a short, fierce nod. “We’ll make the camp a fist, Majesty. Nothing gets through.”

  George arrived with a sword drawn, his hair loose and his cloak thrown on badly.

  “So they dared it,” he said. “On the north bank too.”

  Andreas’ mouth twisted. “Maybe this is the noise,” he said. “While the real shove hits the bridgehead.”

  Constantine motioned for George to stay close and hurried with his guards toward the gun park.

  The gun park stood close to the river works: Drakos pieces under tarps, powder barrels stacked and covered, wagons of shot and tools, draft teams tied in lines. Musketeers were already firing too soon into the fog, their shots going high.

  “Hold fire unless you have a shape!” Constantine barked, slapping a barrel down with his palm. The nearest musket dipped.

  Ak?nc? riders flashed. They didn’t come to die in lines. They came to spoil: arrows into horse lines, arrows into draft teams, a quick slash at a harness, then away.

  A horse went down with an arrow in its neck and kicked itself into panic. Another animal tangled, and men shouted over the rising terror.

  Andreas moved like a wedge. He seized a captain by the shoulder strap. “Pike hedge across the lane. Now! Pyrvelos behind the carriages—low aim. If they break in, they die here.”

  Pikes came up, angled down, a bristling wall across the passage. Musketeers crouched behind wheels and mantlets, pieces leveled at the gaps where riders would try to slip.

  The Drakos crews pulled off the tarps and set to work at once. Handspikes went under the wheels, and men leaned in at the spokes to turn the guns between the wagons. The ground was too soft for it. More than once the wheels slid back into the ruts, and the crews had to stop, reset their footing, and heave again before the barrels came round to the new angle.

  A young officer rode up, eyes bright with the kind of courage that wants a story told about it. “Majesty, give me fifty horse and I’ll run them down, they’re pulling back!”

  Constantine saw the lure: fog, broken ground, pursuit turning discipline into scattered men.

  “They want us stretched,” he said. His voice stayed low; control carried farther than a shout. “Let them ride. We hold.”

  Andreas backed him without hesitation. “Hold your line,” he said. “Chase them and you’re on your own.”

  The Ak?nc? tested the hedge, feinting at a seam between wagons. One rider got greedy, pushing too close to loose at the powder guards. A measured Pyrvelos volley cracked low. The horse folded screaming; the rider crawled and was finished without ceremony.

  A small cluster bunched at the edge of torchlight, too many bodies too close.

  “Grapeshot!” Andreas bellowed.

  The Drakos coughed. The blast slapped faces. The shot tore through horseflesh and men in a wet, sudden ruin. The remaining riders peeled away after that, slipping back into fog.

  The park held, but it held with damage: animals dead or lamed, harness cut, a broken axle, men down in heaps that would turn into numbers by noon.

  A new sound threaded through the thinning chaos: horns from the south bank, sustained now, urgent. Then musketry, continuous, followed by the deeper thump of one cannon.

  A runner reached them, soaked to the knee. “Majesty,” he gasped. “Signal from Adata. The bridgehead’s under real pressure. They’re coming in weight.”

  Fog was lifting into grey dawn. Across the river, smoke already rose in low sheets.

  Constantine made himself choose with his whole body.

  “Hold here,” he told Andreas. “Move two tagmata farther upstream to guard the batteries. I want our guns free to fire across without looking over their shoulders. Keep the guns alive, keep the south bank alive.”

  Andreas’ face tightened with understanding. “And you?”

  “I stay by the batteries,” Constantine said. “If that box breaks, we lose the river.”

  Andreas nodded once and turned to bellow orders, making the camp tighten into the fist he’d promised.

  By dawn the fog had thinned. The far bank was visible again: reeds, bare willows, the muddy landing place, and the bridgehead crowded with men behind shields and pikes. Smoke drifted low across the ground. Powder smoke carried over the water.

  Constantine stood near the north-bank guns, boots sinking in churned earth, hands numb despite his gloves. When he flexed his fingers, pain bit up into his wrists.

  Across the river, movement gathered and surged.

  Out of scrub and town lanes, Azaps poured—boards over their heads, brush bundles and hurdles carried like crude armor, men spent like tinder because they were cheap to lose. Behind them, Ak?nc? riders moved in loose bands, arrows rising in bitter arcs.

  The bridgehead answered the way Constantine had built his army to answer: pikes locked outward; muskets firing in controlled pulses from behind mantlets.

  The first wave reached the outer screens. The line buckled for a heartbeat at one corner and then stiffened again as Pyrvelos stepped up to fire at ten paces.

  From upstream, Ak?nc? began harassing the flank. They rode in close enough to loose, then wheeled away and came in again. Their arrows found exposed men. From this distance Constantine could hear only the broad noise of the fight.

  For a stretch of minutes, the north-bank guns had no clean work. The enemy stayed dispersed, daring him to waste powder on ghosts. He felt the absence anyway—felt it in the way the riders pressed closer, sensing that iron from this bank had been turned inward by the raid.

  Adata answered first.

  From the island, Drakos guns opened fire. Shot tore into Azap bodies massing beyond the immediate fight, opening gaps where they had gathered too tightly. Mud and bodies flew. The attack faltered, then came on again.

  An artillery captain lifted his sighting board, cheeks raw with wind. “Six hundred paces, Majesty.”

  Constantine watched for the moments when the enemy forgot dispersion and became a target.

  “Load!” he said.

  Swab. Powder. Wad. Ball. Ram. The crews finally moved with the calm rhythm of men who understood that panic is contagious.

  A signal gun boomed, flat and heavy, warning the far bank again.

  “Closer,” Constantine said.

  The first shot hit low ground and threw up a fan of black earth. The riders scattered. They loosed as they pulled away. The next ball landed closer, then closer again. A rider disappeared under a falling horse. A group of Ak?nc? gathering for another push broke apart under the fire.

  The rhythm changed across the river. The Ak?nc? widened their spacing; their boldness thinned under shot. The Azap waves still came, but their shove lost shape as the guns found any crowd worth aiming at.

  A rope-boat scraped into the north-bank mud below the battery. A man climbed out half-soaked and ran up the slope, soot and river water streaked across his face.

  “Majesty,” he said, stopping to catch enough breath to speak clearly. “They came on hard at first light. We held the line. Adata’s guns checked them on the left. Your fire from this bank is forcing the riders back.”

  “And Philippopolis?” Constantine asked.

  “Still fighting in the streets near the north quarter. There’s smoke in the alleys and scattered firing. We hold the corridor, but not the whole town.”

  Constantine took that in and looked back across the river.

  On the far bank, the Azaps began to peel away in ragged clusters, dragging wounded, leaving others where they fell. The Ak?nc? withdrew more smoothly, still loosing as they went, threat as habit.

  By late morning the musket crackle thinned into intermittent bursts. The horns on the south bank fell silent one by one. Smoke still hung over Philippopolis like a bruise.

  The bridgehead had held. The crossing was delayed for hours, but the box still stood and men still clung to the southern mud. The Ottomans withdrew, leaving their dead behind. They would come again when the price looked better.

  Constantine looked at the river and thought of Edirne.

  He swore that when the time came, he would burn the city and leave nothing standing that could shelter the men who had tried to break him here.

  Then he turned back to the guns. The river was still between them, and there was still work to do