Such cooperation would have been impossible in the West, where the pope had lost his emperor and the distinction between sacred and secular power had become hopelessly blurred. Forced to wear both the crown and the papal tiara, the pope entered the political arena, bringing the church into direct competition with the state. The kings of Europe strenuously fought papal interference in their affairs, while the church tried to fight its growing worldliness while maintaining its influence. The struggle between the two would become the defining tension of western history, and make the East—where the original roles hadn’t broken down—appear impossibly alien.
The cooperation between church and state may have enriched the emperor, but it failed to cheer the miserable inhabitants of the Eastern Empire. Farms continued to burn, men continued to be killed or enslaved, and still no armies came streaming out of the golden gate to defend the beleaguered citizens. They were left to fend for themselves, to curse the dreaded Persians and the emperor who had seemingly abandoned them, and to survive as best they could.
Heraclius hadn’t forgotten about them, however. He simply had his own plans and didn’t intend to be rushed. The imperial army was shattered and demoralized, and throwing it in front of the Persians would only destroy it completely. It needed to be carefully rebuilt and reorganized, and only when that task was finished could he lead it to the defense of the empire. For ten long years, Heraclius stubbornly resisted the pleas of his suffering people, the hawks in his government, and the repeated attempts of the Persians to draw him out. The walls of Constantinople would keep him safe, and he wouldn’t risk everything in a battle before he was absolutely ready.
By the spring of 622, his preparations were at last finished. It was a testament to Heraclius’s power to inspire that during those long years, despite appalling losses to imperial territory, there were no calls for his removal or pretenders rising to usurp him. There was still a nervous sense of disquiet, but the emperor’s confidence never wavered, and it proved infectious. The army he finally led out of the golden gate was infused with his charisma and proud in their bright armor to march to the defense of their compatriots.
The great advantage the Byzantines had never lost to the Persians was the control of the sea, and Heraclius used it to its full extent. Landing at Issus—where Alexander the Great had destroyed an earlier Persian Empire nearly a thousand years before—he launched a surprise attack. The battle was a desperate gamble. Heraclius knew that if he should fall the empire was doomed, but he was prepared to risk everything—even bringing along his pregnant wife, Martina. The Persians confronting him were commanded by their most famous general, a man who had conquered Egypt, but it was the inexperienced Heraclius who triumphed. Breaking before the Byzantine charge, the Persians were scattered, according to one source, “like a herd of goats.” Morale skyrocketed. The Persians were not invincible after all.
As the army wintered in Cappadocia, Heraclius infused them with his spirit, holding daily training sessions and filling them with confidence. They were honored men, he told them, fighting on the side of truth against the pagans who had burned their crops, killed their sons, and enslaved their wives. That spring they would have their revenge. Marching into modern-day Azerbaijan, the center of Persian Zoroastrian fire worship, the reinvigorated Byzantine army avenged Jerusalem by burning the great fire temple and sacking the birthplace of Zoroaster.
The Persian king Chosroes II was close to panic, but that spring he began to formulate a plan. The Persian Empire was vast, and Heraclius had now penetrated deeper into it than any Roman commander before him. The Byzantines were outnumbered and far from home, unable to maintain a war of attrition, and perhaps the king could use that to his advantage. Gathering an army fifty thousand strong, Chosroes II entrusted it to a general named Shahin, ordering him to destroy Heraclius and warning him that the cost of failure was death. Then, confident that the Byzantines would be tied down, the Persian king contacted the barbarian Avars and offered his support in an attack on Constantinople.
Heraclius was now faced with the most difficult decision of his career. If he rushed back to the defense of the capital, he would lose his best chance of winning the war and undo all the hard work of the past four years. On the other hand, if he stayed, Constantinople might fall for lack of defenders. His solution was to split the army into three parts. The first raced back to defend Constantinople; the second he entrusted to his brother Theodore to deal with Shahin; and the third, and by far the smallest, stayed with him to hold Armenia and the Caucasus Mountains and invade a virtually defenseless Persia.
Heraclius had great faith in the defenses of Constantinople, and in an attempt to bolster its defenders’ morale, he sent an avalanche of letters detailing every aspect of a successful defense. Armed with the emperor’s letters, and the knowledge that he had not left them to their fate, morale soared despite the rather terrifying presence of eighty thousand barbarians outside the walls. Every citizen of the city cheerfully took his turn manning the defenses or carrying supplies to the soldiers on the walls, and each day the patriarch made a circuit of the land walls while holding high an icon of the Virgin Mary, the protector of the city, who, it was whispered, struck terror into the hearts of the barbarians.*
The city certainly seemed to be under divine protection. Day after day, the siege engines battered uselessly against the walls, and tensions among the attackers began to rise, fraying the alliance between the barbarians and the Persians. When news arrived that the Byzantine army under Heraclius’s brother Theodore had met Shahin in a driving hailstorm and completely crushed the Persian army, the frustrated Avars gave up.† Their mighty siege engines had been futile, their Persian allies were useless, and every attempt at subtlety had been effortlessly repulsed. The city was obviously under divine protection after all, and therefore invincible. Dismantling their equipment, the Avar hordes dragged themselves away from the sight of those accursed walls, burning some churches for good measure as they lumbered off.
Everything seemed to be collapsing at once for the Persians. Just a few years before, they had been on the brink of capturing Constantinople, and now their armies were broken and retreating on all fronts. Outside the ancient city of Nineveh, a last, desperate attempt was made to restrain the triumphant Heraclius, but in a bloody, eleven-hour battle, the emperor shattered the Persian army, killing its commander in single combat.
The brutal sacking of Ctesiphon that followed the battle put the finishing touches on the war. So much treasure was captured that Heraclius’s army couldn’t carry it all, and much of it had to be consigned to the flames. Chosroes II called for women and children to defend him, but by now he was widely blamed for the calamity that had overtaken Persia, and no one was willing to fight for him.* Furiously turning on their monarch, the army and people alike rose up in revolt, and their justice was terrible. Chosroes II was flung into the ominously named Tower of Darkness, where he was given only enough food and water to prolong his agony. When he had suffered enough, he was dragged out and forced to watch as his children were executed in front of him. After the last of his offspring had expired, his torment was finally brought to an end when he was shot slowly to death with arrows.
The war had broken Persian strength, and the new king, Shahr-Baraz, immediately sued for peace, surrendering all the conquered land, releasing all prisoners, and returning the True Cross. As a final gesture of submission, he even made the Byzantine emperor the guardian of his son. Heraclius had recovered at a stroke all that had been lost during the long years of decline. The long struggle with Persia was over; never again would they trouble the Byzantine Empire.