All at once the standard of St. Mark appeared upon one of the towers, planted by an invisible hand; upon seeing this the Venetians uttered a loud shout of joy, persuaded that their patron saint fought at their head; their courage proportionately increased with the terror and despair of their enemies; the most intrepid cast themselves on to the walls, and soon twenty-five towers were in their possession. They pursued the Greeks into the city; but fearing to fall into some ambush or be overwhelmed by the people, crowds of whom filled the streets and covered the public places, they set fire to the houses as they came to them on their passage. The conflagration extended rapidly,[103] and drove before it the terrified and trembling multitude. Whilst the flames, preceding the conquerors, spread devastation on their path, and the greatest disorder prevailed in Constantinople, Alexius, pressed by the cries of the people, mounted on horseback, and ordered a sortie of the troops, by three different gates, to attack the French, who were less fortunate in this day’s fight than the Venetians. The army conducted by the emperor was composed of sixty battalions; clothed in all the marks of imperial dignity, Alexius rode along the ranks, animated his soldiers, and promised them victory. At his approach, the Crusaders abandoned the ramparts, and drew up in line of battle before their camp.[104] Villehardouin admits that the bravest knights were, for a moment, seized with fear. Dandolo, who saw the danger in which the French were placed, abandoned his victory, and flew to their aid. But all the Crusaders united, could not have resisted the imperial army, if the Greeks, but more particularly their leaders, had shown a spark of courage. The troops of Alexius would not advance nearer than within bow-shot, and contented themselves with showering a multitude of arrows from a safe distance. The son-in-law of the emperor, Lascaris, of whose courage the Greeks and even the Latins boast, demanded with loud cries that the Crusaders should be attacked in their intrenchments; but he could not prevail upon Alexius, surrounded by base courtiers who endeavoured to communicate their own alarms to him, and assured him that he had done enough for his glory in showing himself to his enemies. The emperor, without having fought, ordered a retreat to be sounded, and his numerous troops, who still bore the name of Romans, and before whom the eagles of Rome were carried, returned with him into Constantinople.