Chapter 47: Between Two Rivers
The Sava was swollen with snowmelt when Constantine's column arrived at Sirmium. Boots squelched through mud and thawing slush, their passage marked by the scars of broken siege engines and heaps of ash still smoldering where Licinian bodies had been hurriedly burned. No crowds greeted them; the townsfolk watched from doorways, measuring the faces of conquerors who had bled too much to cheer. Constantine rode at the head, cloak sodden, face masked by exhaustion and intent.
He refused all requests to return west. The empire, he declared, had suffered its greatest wound here. If it was to heal, it must begin at the heart of the gash. The marble halls of Rome would not see him until the Danube frontier ran iron-bright and the provinces knew their master by more than rumor.
Within hours, Sirmium's basilica became a throne room. Illyrian chieftains shuffled in, their tunics damp with river mist. Pannonian magistrates arrived with papers and false smiles. Even bishops from the wild Danube towns stood before the lamps, their vestments stained by mud and candle smoke. Constantine made them all the same offer-acknowledge the purple, keep your estates, rebuild the broken limes under my eagles. Those who swore received Roman gifts and secure titles. Those who hesitated watched as their villas became hospitals, their livestock seized for legionary stew-pots, their sons drafted into the pioneer corps. None hesitated twice.
Wagon trains rolled north within days, carrying timber, cut stone, and lime. Watchtowers sprouted along the riverbanks, lanterns flickering above the water at night. Villages resupplied burnt-out granaries, grain flowed south again, and the price of bread dropped to its old pre-war coin. Yet nothing was given for free; every receipt bore the emperor's seal, every act of mercy its echo in new obligations. Rome, battered but not broken, began to breathe again through the sinews of its frontier.
But the army itself was gasping. The fields of Mardia had cost too many men. Constantine knew it; the quartermasters knew it; the grumbling on the drill grounds made it impossible to ignore. He summoned his officers and gave a simple order: find the hardest men left standing in Pannonia, Thrace, and Moesia-then make them Romans.
He led the way himself, rain dripping from his hair as he strode between lines of new recruits. Some had fought for Licinius; others for whoever had paid in salt or silver. Now they stood shivering, uncertain, while the emperor met their gaze. "You have survived hell," he told a Thracian with a half-healed sword scar. "Survive for Rome, and earn a stake in her new peace." Each man received a diploma of service and a battered shield repainted with the Chi-Rho. That mark, once a vision, now a promise of bread, loot, and a future paid in iron.
News traveled ahead of his measures. Outlaws surrendered, hoping to exchange their lives for enlistment. Runaway slaves offered to build roads. The Pannonian earth, too long neglected, yielded up men with skills that mattered more than lineage. Loyalty, Constantine understood, was not inherited. It was bought and shaped, then hammered into the ranks until it outlasted memory.
In late February, an unexpected arrival rippled through the camp. Crispus rode in from the Rhine, taller than his letters, wearing the blue cloak of a Gallic cavalry officer. The boy's eyes flashed with both eagerness and worry, a face too open for the games of court. Fausta met him at the gate, Constantine's second wife, her smile thin as paper. She embraced the youth before the assembled officers, then held her own son-Constantine II-close, studying the two brothers with the scrutiny of a chess player measuring her next move.
The court itself throbbed with tension. Crispus was acknowledged but never at ease. At dinners, Fausta orchestrated pleasantries but never left him alone with her own child. Behind the banners and feasts, every glance and gesture echoed the stories of murdered heirs, drowned rivals, and broken dynasties. Constantine, for all his public resolve, measured each interaction with a strategist's caution.
The Ides of March brought the pageant that no blood feud could delay. Trumpets blared, banners snapped, and the battered legions assembled in Sirmium's rebuilt forum. Before them, on a shield lifted high, Constantine raised Crispus and proclaimed him Caesar. The soldiers cheered-partly for the new prince, partly for the pay bonus that always followed such declarations. Crispus beamed, and for a moment the audience believed in unity. Far away, Licinius performed the same ritual with his own infant son, purple cloak draped across a baby's shoulders, another pawn set in motion.
Treaties were dispatched, sealed in wax and honeyed words. Senators in Rome and Nicomedia toasted a golden peace, merchants bet fortunes on the reopening of the Via Diagonalis. Only those who had stood knee-deep in the blood of Mardia knew the truth: this was no lasting concord, just a pause forced by exhaustion.
Within Constantine's palace, the facade held. Fausta's every gesture toward Crispus was warm, yet at night Constantine caught her murmuring at the nursery window. "He is clever," she whispered, "and the men adore him." Constantine answered, "They adored me too, until I threatened a stronger man." They spoke in soft voices, both remembering the broken fates of Severus and Maxentius-proof that an empire rarely tolerated more than one heir.
By April the earth hardened, and campaigns resumed. Constantine, however, remained in Sirmium. He spent his days in the candlelit silence of the map chamber, parchments spread like a general's hand before battle. Legion deployments, grain depots, the state of every bridge and pier-he demanded daily reports, sometimes hourly. One evening, as mist coiled along the river, he summoned Valerius, his master of secrets, and unrolled a different kind of chart. Not lines of legions, but coastlines and currents, the thin spit of land where the Bosphorus met the sea.
"Byzantium," Constantine murmured, tracing the city's ancient walls with a fingertip. "Rome's bones are old and beautiful, but brittle. Our world needs a capital carved from logic, not legend. A place where grain fleets and war galleys meet, where messages reach every front before rebellion can hatch."
Valerius watched, careful to betray nothing. Constantine's mind always ran ahead, chasing visions that others dismissed as dreams.
"I want a survey," the emperor said at last. "Harbors, springs, winds, the lay of the land. Engineers and scribes-disguised as merchants or builders. Reports to come to me alone."
Valerius nodded, already shaping a dozen aliases. "We will begin at once, Augustus. There will be no leak."
Constantine leaned closer. "I saw a sign at Rome-the Chi and Rho, burning in the air. Maybe a dream, maybe a warning. But numbers do not lie. The world pivots at the Bosphorus; the empire's future will be built there, not inherited from tombs."
Valerius left, heart hammering, understanding more than ever the gulf that separated the emperor from his generals. Others thought of survival; Constantine engineered permanence. He saw the map as a grid of leverage and probability, faith and power as interchangeable variables.
Weeks passed. Sirmium bustled with life again. Legions drilled in fields fresh with spring grass, new timber forts bristled along the Danube. Crispus impressed the old centurions, sweating in the dust, sparring without rank or privilege. Fausta watched from a portico, eyes veiled, every success recorded in the ledger of family politics. In Nicomedia, Licinius issued edicts, paid bribes to Gothic chieftains, restocked arsenals. Both Augusti honored the treaty in public while gaming its demise behind closed doors.
By midsummer, Constantine's reforms were visible from the mountains to the sea. Refugees from the east returned to their farms, caravan trains arrived fat with Illyrian wheat, and the currency stabilized. Still he lingered. The last embers of revolt needed stamping, the bones of the army reset. Orders flew daily to Ravenna, Aquileia, and the Rhine: logistics, recruiting, law. The western empire moved to a rhythm he alone dictated.
Then, one morning by the river bridge, a courier arrived, cloak stained with Balkan mud. Valerius's ciphered report was pressed into the emperor's palm. It spoke of the Bosphorus-its soundings, its harbors, the bedrock that ran strong beneath the peninsula, and the wind patterns that funneled ships to its shores. At the bottom, in a script known only to two, Valerius had scrawled: "Foundations certain. All is possible."
Constantine read it twice, folded it carefully, and slid it into his belt. As the sun rose over Sirmium and the hammering of hammers and the chant of recruits filled the morning air, the emperor looked east, his mind already assembling blueprints that would outlive every senator in Rome.
In time, he knew, the treaty would break. Licinius would try the limits of exhaustion, the patience of soldiers, the strength of new walls. There would be another reckoning-perhaps soon, perhaps years away. But when that hour came, Constantine intended to meet it from a city of his own design, a fortress crowned not by myth, but by the iron calculus of victory.
For now, he gave orders to repair the city's aqueduct, praised the new Danubian recruits, and greeted his family in the palace chapel, watching Fausta and Crispus with equal parts pride and caution. Behind every smile, the future's blade waited, unsheathed.
The Sava rolled on, swollen and cold, reflecting the ambitions of a world neither east nor west, but ready-at last-for the next design.