It was resolved, in a council of the leaders, to take advantage of the enthusiasm whilst it was at its height, and execute the assault. As the Saracens displayed a great number of machines on the sides of the city which appeared to be most threatened by the Christians, it was determined to change the dispositions of the siege, and that the principal attack should be directed towards the points where the enemy had made no preparations for defence.

During the night Godfrey removed his quarters to the eastward, towards the gate of Cedar, not far from the valley in which Titus encamped when his soldiers penetrated into the galleries of the temple. The rolling tower, and the other machines of war which the Duke of Lorraine had caused to be built, were transported, with incredible efforts, in front of the walls he wished to attack. Tancred and the two Roberts drew up their machines between the gate of Damascus and the angular tower, which was afterwards called Tancred’s Tower.

At break of day the Saracens, on beholding these new dispositions, were seized with astonishment and terror. The Crusaders might have taken advantage of the confusion inspired in this change; but upon a steep ground it was difficult to bring their machines close to the walls. Raymond, in particular, who was charged with the attack on the south, found himself separated from the ramparts by a ravine, which it was necessary for him to fill up. He caused it to be proclaimed by a herald that he would pay a denier to every person who would cast three stones into it. A crowd of people instantly flocked to the aid of the soldiers,—a shower of darts and arrows from the ramparts producing no effect upon the ardour and zeal of the labourers. At length, by the end of the third day, all was completed, and the leaders gave the signal for a general assault.

On Thursday, the 14th of July, 1099, as soon as day appeared, the clarions resounded in the camp of the Christians; all the Crusaders flew to arms; all the machines were put in motion at once; pedereros and mangonnels vomited a shower of stones against the enemy; whilst, protected by the tortoises and covered galleries, the rams were brought up close to the walls. The archers and cross-bowmen kept up a continuous discharge at the ramparts, whilst the bravest, covered with their bucklers, planted ladders in places where the walls appeared most assailable. On the south, the east, and the north of the city, the three rolling towers advanced towards the ramparts, amidst tumultuous noise, and the shouts of the workmen and soldiers. Godfrey appeared upon the highest platform of his wooden fortress, accompanied by his brother Eustache, and Baldwin du Bourg. He animated his men by his example; every javelin he hurled, say the historians of the times, carried death to a Saracen. Raymond, Tancred, the Duke of Normandy, and the Count of Flanders fought amongst their soldiers; the knights and men-at-arms were animated by the same ardour as the principal leaders, and eagerly sought every point where danger threatened most.

Nothing could equal the fury of the first charge of the Christians, but it everywhere met with an obstinate resistance. Arrows, javelins, boiling oil, the Greek fire, and fourteen machines, which the besieged had had time to oppose to those of their enemies, repelled on all sides the attack and the efforts of the assailants. The infidels, issuing by a breach made in their rampart, attempted to burn the machines of the besiegers, and spread disorder throughout the Christian army. Towards the end of the day the towers of Godfrey and Tancred could not be made to move; Raymond’s had sunk into ruins. The combat had lasted twelve hours without victory appearing to be at all inclined to favour the Crusaders;—night separated the combatants. The Christians returned to their camp, trembling with rage and grief; the leaders, particularly the two Roberts, could not console themselves, from the idea that God had not yet thought them worthy to enter the Holy City, and worship the tomb of his Son.

The night was passed on both sides in a state of anxious inquietude, each deploring their losses, and trembling at the prospect of fresh ones. The Saracens expected a surprise; the Christians feared that the Saracens would burn the machines they had left at the foot of the ramparts. The besieged were employed in repairing the breaches made in their walls; the besiegers in attempting to put their machines in a state for another attack. The following day brought the same combats and the same dangers as the preceding one. The leaders endeavoured to revive the courage of the Crusaders by their speeches. The priests and bishops went among the tents of the soldiers, announcing the certain succour of Heaven. The Christian army, filled with new confidence in victory, appeared under arms, and advanced in silence towards the points of attack, whilst the clergy walked in procession round the city.

The first shock was impetuous and terrible. The Christians, indignant at the resistance they had met with the day before, fought with fury. The besieged, who had learnt the arrival of an Egyptian army, were animated by the hopes of victory; formidable machines covered their ramparts. Javelins were heard hissing on all sides; stones and large timbers, launched by the Christians and the infidels, met in the air with a fearful crash, and fell upon the assailants. From the height of their towers the Mussulmans incessantly hurled blazing torches and fire-pots. The wooden fortresses of the Christians approached the walls amidst a conflagration which seemed spreading in all directions. The infidels directed most of their efforts against the tower of Godfrey, upon which glittered a cross of gold, the sight of which provoked their fury and their insults. The Duke of Lorraine had seen one of his esquires and several of his soldiers fall by his side; himself a mark for all the arrows and darts of the enemy, he fought on amidst the dead and the wounded, never ceasing to shout encouragement to his companions in arms. The Count of Toulouse, who attacked the city on the south side, opposed all his machines to those of the Mussulmans; he had to contend with the Emir of Jerusalem, who animated his troops by his words, and showed himself upon the walls, surrounded by the élite of the Egyptian soldiery. Towards the north, Tancred and the two Roberts appeared at the head of their battalions. Motionless upon their rolling fortress, they looked impatient to be wielding lance and sword. Already their rams had, upon several points, shaken the wall, behind which the Saracens closed their ranks, and presented themselves as a last rampart to the attack of the Crusaders.

In the midst of the combat, say the historians, two female magicians appeared upon the ramparts of the city, appealing to the elements and the powers of hell. They were not able to avoid the death they invoked upon the Christians, and fell beneath a shower of arrows and stones. Two Egyptian emissaries, who had come from Ascalon to exhort the besieged to defend themselves, were surprised by the Crusaders as they were seeking to obtain entrance into the city. One of them fell, covered with wounds; the other, after having revealed the secret of his mission, was launched, by means of a machine, on to the ramparts where the Saracens were fighting.

The combat had lasted half the day, without the Crusaders being able to entertain any hope of penetrating into the place. All their machines were on fire; they wanted water, but more particularly vinegar, which alone had the power to extinguish the kind of fire launched at them by the besieged. In vain the bravest exposed themselves to the greatest dangers, to prevent the destruction of all the wooden machines and the rams; they fell, buried under the ruins, and the raging flames devoured even their bucklers and their vestments. Many of the most intrepid warriors had found death at the foot of the ramparts; a great number of those mounted on the towers had been placed hors de combat; others, covered with sweat and dust, smothered with heat, and staggering under the weight of their armour, began to lose courage. The Saracens, who perceived this, uttered loud cries of joy. In their blasphemies, they reproaching the Christians with adoring a God who was not able to help them. The assailants deplored their lot, and, believing themselves abandoned by Christ, remained motionless on the field of battle.

But the combat was about to change its character. All at once the Crusaders beheld, on the Mount of Olives, a horseman, waving his buckler, and giving the Christian army the signal to enter the city. Godfrey and Raymond, who perceived him first, and at the same moment, cried out that St. George was come to the succour of the Christians. The tumult of the fight allowed of neither reflection nor examination, and the sight of the celestial horseman fired the besiegers with fresh ardour. They returned to the charge; even the women, the children, and the sick crowded into the mêlée, bringing water, food, and arms, and uniting their efforts with those of the soldiers to get the rolling towers, the dread of the enemy, nearer to the walls. That of Godfrey advanced, amidst a terrible discharge of stones, arrows, and Greek fire, and let fall its drawbridge upon the wall. Fiery darts flew at one and the same time against the machines of the besiegers, and against the sacks of straw and hay, and the bales of wool which covered the inner walls of the city. The wind kindled the fires, and drove the flames full upon the Saracens, who, enveloped in fire and smoke, recoiled at the aspect of the lances and swords of the Christians. Godfrey, preceded by the two brothers Lethalde and Engelbert of Tournay, and followed by Baldwin du Bourg, Eustache, Raimbaud, Créton, Guicher, Bernard de St. Vallier, and Amenjeu d’Albret, broke through the enemy, pursued them, and rushed with them into Jerusalem. The brave men who had fought upon the platform of the tower with their intrepid leader, followed them into the streets, and massacred all they met with on their passage.