In Constantinople, the exhausted defenders had reached the breaking point. Subjected to a continuous hellish bombardment, they had to brave the Turkish guns by day and repair the walls by night. There was little time for rest, either emotional or physical, and tensions had begun to flare. But on that last Monday of the empire’s history, the mood changed. There was no rest for the weary, of course, and work continued, but for the first time in weeks, the inhabitants of the city began to make their way to the Hagia Sophia. There, for the first and last time in Byzantine history, the divisions that had split the church for centuries were forgotten, Greek priests stood shoulder to shoulder with Latin ones, and a truly ecumenical service began.
While the population gathered in the great church, Constantine gave a final speech—a funeral oration, as Edward Gibbon put it—for the Roman Empire. Reminding his assembled troops of their glorious history, he proudly charged them to acquit themselves with dignity and honor: “Animals may run from animals, but you are men, and worthy heirs of the great heroes of Ancient Greece and Rome.”*
Turning to the Italians who were fighting in defense of Constantinople, the emperor thanked them for their service, assuring them that they were now brothers, united by a common bond. After shaking hands with each of the commanders, he dismissed them to their posts and joined the rest of the population in the Hagia Sophia.There was no sleep that night for the emperor of Byzantium. He remained in the church to pray until all but a few candles were extinguished, rode out to say a final good-bye to his household, and then spent the rest of the night riding the walls, assuring himself that nothing else could be done. Upon reaching his post at the most vulnerable point in the walls, he dismounted and waited for the attack that he knew must come with the dawn. The sultan, however, chose not to wait for the sun. At one thirty in the morning, the quiet darkness was shattered with a tremendous roar. The Turkish guns erupted, crashing into a section of the wall and sending the defenders scrambling for cover. Within moments, a large gap had appeared, and Mehmed sent his shock troops into the breach before the Byzantines could repair it. For three hours, the onslaught continued, but thanks largely to the efforts of Giustiniani, they were repulsed each time. The Genovese commander seemed to be everywhere, encouraging the men and shoring up the line wherever it wavered. By four in the morning, the exhausted Ottoman irregulars fell back, parting to let the main army pour in. Again the Turks came crashing into the Christian line, clawing their way over the dead and trying to smash their way inside. They fought with an almost maniacal fervor, each man eager to gain the sultan’s favor on earth or rewards in paradise by perishing for his faith. They came within inches of forcing their way in, but Constantine appeared with reinforcements in the nick of time and beat them back. The exhausted defenders slumped wearily down as the defeated Ottomans withdrew, but again there was to be no rest. Sensing his enemies wavering, Mehmed sent in the Janissaries.
Much like the Varangians in the Byzantine army or the Praetorians of ancient Rome, the Janissaries were the elite fighting forces of the Turkish army. Made up of Christians who had been taken from their families while children and forcibly converted to Islam, they were fanatically loyal and expertly trained. Accompanied by the blaring sound of martial music, these disciplined troops came in an unbroken line, seemingly impervious to anything fired at them from the walls. Somehow they were beaten back, but during the assault Giustiniani was wounded when a crossbow bolt crunched through his chest armor. The wound wasn’t mortal, but the stricken Giustiniani was too exhausted to continue. Constantine begged him to stay, knowing what would happen if his men saw him leave, but Giustiniani was adamant and had himself carried down to a waiting ship in the harbor.
The emperor’s worst fears were immediately realized. The sight of their valiant leader being carried from the walls sparked a panic among the Genovese, and they began retreating through an inner gate just as the Janissaries launched another attack. In the chaos, the Turks overran several towers, butchering the panicked defenders who were now trapped between the walls. From his position by the Saint Romanus Gate, Constantine knew that all was now lost. With the cry “the City is lost, but I live,” he flung off his imperial regalia and plunged into the breach, disappearing into history.