On the day after their arrival, the Crusaders formed the siege of the place. The Duke of Normandy, the Count of Flanders, and Tancred, encamped upon the north, from the gate of Herod to the gate of Sedar, or St. Stephen. Next to these Flemings, Normans, and Italians, were placed the English, commanded by Edgar Atheling; and the Bretons, led by their duke, Alain Fergent, the Sire de Château Giron, and the Viscount de Dinan. Godfrey, Eustache, and Baldwin du Bourg, established their quarters between the west and the north, around the extent of Calvary, from the gate of Damascus to the gate of Jaffa. The Count of Toulouse planted his camp to the right of Godfrey, between the south and the west; he had next him Raimbard of Orange, William de Montpellier, and Gaston de Béaru: his troops extended at first along the declivity of Sion, but a few days after he erected his tents upon the top of the mountain, at the very spot where Christ celebrated the Passover with his disciples. By these dispositions the Crusaders left free the sides of the city which were defended, on the south by the valley of Gihon, or Siloë, and towards the east by the valley of Josaphat.

Every step around Jerusalem recalled to the pilgrims some remembrance dear to their religion. This territory, so revered by the Christians, had neither valley nor rock which had not a name in sacred history. Everything they saw awakened or warmed their imagination. But that which most inflamed the zeal of the Crusaders for the deliverance of the city, was the arrival among them of a great number of Christians, who, deprived of their property and driven from their houses, came to seek succour and an asylum amidst their brethren of the West. These Christians described the persecutions which the worshippers of Christ had undergone at the hands of the Mussulmans. The women, children, and old men were detained as hostages; all who were able to bear arms were condemned to labour exceeding their strength. The head of the principal hospital for pilgrims, together with a great number of Christians, had been thrown into prison. The treasures of the churches had been plundered to support the Mussulman soldiery. The patriarch Simeon was gone to Cyprus, to implore the charity of the faithful to save his flock from threatened destruction, if he did not pay the enormous tribute imposed by the oppressors of the Holy City. Every day the Christians of Jerusalem were loaded with fresh outrages; and several times the infidels had formed the project of giving them up to the flames, and completely destroying the Holy Sepulchre, with the Church of the Resurrection. The Christian fugitives, whilst making these doleful recitals to the warlike pilgrims, earnestly exhorted them to attack Jerusalem. In the early days of the siege, an anchorite, who had fixed his retreat upon the Mount of Olives, came to join his entreaties to those of the banished Christians, to persuade the Crusaders to proceed to an immediate assault; he urged his suit in the name of Christ, of whom he declared himself the interpreter. The Crusaders, who had neither ladders nor machines of war, gave themselves up to the counsels of the pious hermit, and believed that their courage and their good swords would suffice to overthrow the ramparts of the Saracens. The leaders, who had seen such prodigies enacted by the valour and enthusiasm of the Christian soldiers, and who had not forgotten the prolonged miseries of the siege of Antioch, yielded without difficulty to the impatience of the army; in addition to which, the sight of Jerusalem had exalted the spirits of the Crusaders, and rendered the least credulous hopeful that God would second their bravery by miracles.

At the first signal, the Christian army advanced in good order towards the ramparts. Never, say historians, was so much ardour witnessed in the soldiers of the Cross; some, serried in close battalions, covered themselves with their bucklers, which formed an impenetrable vault over their heads, and gave their utmost efforts to shake the walls with pikes and hammers; whilst others, ranged in long files, remained at some distance, employing slings and cross-bows to drive away the enemies from the ramparts. Boiling oil and pitch, immense stones and enormous timbers, fell upon the first ranks of the Christians, without stopping their labours. The outward wall had already crumbled beneath their blows, but the interior wall presented an invincible object. Escalade was the only means left. This bold method was attempted, although they could only find one ladder long enough to reach the top of the walls. The bravest mounted it, and fought hand to hand with the Saracens, who were astonished at such audacity. The Crusaders would most probably have entered Jerusalem that very day, if they had had the necessary war instruments and machines; but the small number who were able to attain the top of the walls could not maintain themselves there. Bravery was useless; Heaven did not accord the miracles promised by the hermit, and the Saracens at length forced the assailants to retreat.

The Christians returned to their camp, deploring their imprudence and their credulity. This first reverse taught them that they could not reckon upon prodigies, and that they must, before they could expect to succeed, construct some machines of war. But it was difficult to procure the necessary wood in a country which presented nothing but barren sand and arid rocks. Several detachments were sent to search for wood in the neighbouring plains. Chance led them to the discovery of some immense beams in the depths of a cavern, and Tancred had them transported to the camp. They demolished all the houses and churches that had escaped the flames; and every stick of wood that the Saracens had not destroyed, was employed in the construction of the machines. Notwithstanding the discoveries, the work did not keep pace with the impatience of the Crusaders, or prevent the evils which threatened the Christian army. The great summer heats commenced at the very time the pilgrims arrived before Jerusalem. A blazing sun, and southern winds laden with the sands of the desert, heated the atmosphere to an intolerable degree. Plants and animals perished; the torrent of Cedron was dried up; all the cisterns around were either choked or poisoned. Beneath a sky of fire, in a burning and arid country, the Christian army soon found itself a prey to all the horrors of thirst.

The fountain of Siloë, which only flowed at intervals, could not suffice for the multitude of pilgrims. A skin of fetid water, fetched three leagues, was worth two silver deniers. Overcome by thirst and heat, the soldiers were seen digging the soil with their swords, thrusting their hands into the freshly-turned earth, and eagerly carrying the humid particles to their parched lips. During the day, they anxiously looked for night; and during the night, panted for dawn, in the ever-disappointed hope that the return of the one or the other would bring some degree of freshness or some drops of rain. Every morning they were to be seen gluing their burning lips to the marbles which were covered with dew. During the heat of the day the most robust languished under their tents, without having even strength to implore Heaven for relief.

The knights and barons were in no respect exempt from the scourge under which the army suffered; and many of them daily exchanged for water the treasures obtained from the infidels. “The grief of this extreme thirst,” says the old translator of William of Tyre, “was not so great for the foot soldiers as for the horsemen; the foot soldier could content himself with a little, but the horsemen could only satisfy their horses with copious draughts. As to the beasts of burden, there was no more account taken of them than of so many dead creatures; they were allowed to wander away at will, and died of thirst.”

In this state of general misery, the women and children dragged themselves about the country in search of a spring or cooling shades which had no existence. Many of these, wandering too far from the army, fell into the ambuscades of the Saracens, and lost either their lives or their liberty. When a pilgrim discovered a spring or a cistern in a secluded spot, he concealed it from his companions, or forbade their approaching it. Violent quarrels arose in consequence, and it was not uncommon to see the soldiers of the Cross contending, sword in hand, for a little muddy water. The want of water was so insupportable, that famine was scarcely perceived or thought of: the heats of thirst and of the climate made them careless of food.

If the besieged had then made a spirited sortie, they would have easily triumphed over the Crusaders; but the latter were defended by the remembrance of their exploits, and, however great their distress, their name alone still inspired terror among the Saracens. The Mussulmans might, likewise, well believe that their enemies could not long resist the double scourge of hunger and thirst. In fact, their situation became so dreadful, that the object of their enterprise was lost to their minds; they not only forgot the Holy City, but their God. And then came thoughts of the homes they had left; and many, deserting the colours they had fought so bravely under, fled away to the ports of Palestine and Syria, to watch for an opportunity of returning to Europe.

The leaders were fully aware there was no other remedy for the ills they laboured under but the capture of Jerusalem; but the labours of the siege went on slowly; they had not yet enough wood for the construction of machines; they wanted labourers and the necessary implements. We cannot help being here struck with the difference between an army governed by one strong mind and will, and one under fifty commanders, as this of the Crusaders was. When Titus wanted a wall built round the city, his legions did it in three days; the Crusaders complained of scarcity of labourers for the erection of a few machines. From the first Crusade to the last, this was the cause of failure; every captain was a private adventurer; he acknowledged no sovereign commander, and was at all times governed by what he thought to be his own private interests: there was scarcely ever any unity of view or action.

The wisest and the bravest, in such a critical situation, were beginning to despair of the success of the holy enterprise, when they were cheered by a succour as welcome as it was unexpected. They learned that a Genoese fleet had entered the port of Joppa, laden with provisions and munitions of all kinds. This news spread joy throughout the Christian army; a body of three hundred men left the camp to go and meet the convoy, which Heaven appeared to have sent to the Crusaders in their misery. The detachment, after having beaten the Saracens they met with on their passage, entered the city of Joppa, which had been abandoned by its inhabitants, and was occupied by the Genoese. The Crusaders learnt that the Genoese fleet had been surprised and burnt by that of the Saracens, but that they had had time to secure the provisions, and a great number of implements and tools. All that was saved was safely conveyed to the camp; and it afforded the Crusaders additional joy to find that the welcome supply was attended by a great number of Genoese engineers and carpenters.