Shortly before his death, El-Adil, like his brother Saladin, narrowly escaped losing all his glory and the fruits of so many victories. Pope Honorius III. had successfully aroused the zeal of the Western nations for a new Crusade. Numerous well-armed and warlike-minded pilgrims—among whom were King Andreas of Hungary and Duke Leopold of Austria—landed at Acre in 1217, and King John of Jerusalem led them against the Moslems. El-Adil hastened from Egypt to the scene of action, but was forced to retreat to Damascus and to give up the whole of the southern district, with the exception of the well-fortified holy town, to be plundered by the Christians. In the following spring, whilst El-Adil was in Syria, a Christian fleet sailed to Damietta, and besieged the town. The attacking forces were composed of Germans and Hungarians, who had embarked at Spalato on the Adriatic for St. Jean d’Acre, where they spent a year in unfortunate expeditions and quarrels with the Christians of Syria. They were joined by a fleet of three hundred boats furnished by North Germans and Frisians, who, leaving the banks of the Rhine, had journeyed there by way of the Straits of Gibraltar, prolonging the journey by a year’s fighting in Portugal.
The Christians then in Palestine had persuaded the Crusaders to begin with an attack on Egypt, and they had therefore chosen to land at Damietta. This was a large commercial town to the east of one of the arms of the Nile, which was defended by three walls and a large tower built on an island in the middle of the Nile, from which started the chains that barred the river.
The Frisian sailors constructed a castle of wood, which was placed between the masts of two ships, and from which the Crusaders were able to leap to the tower, and thus they were able to blockade and starve the town. The siege was long, and an epidemic breaking out among the besiegers carried off a sixth of their number. The sultan tried to succour the besieged by floating down the stream corpses of camels, which were stuffed with provisions, but the Christians captured them. He then offered to give the Crusaders, on condition they would depart, the True Cross and all he possessed of the kingdom of Jerusalem; but Pelagius, the papal legate,—a Spanish monk who had himself named commander-in-chief,—rejected the offer.
El-Adil was so stunned by the news of the success of the Christians that he died a few days after (August, 1218). El-Kamil, however, was not discouraged; he not only defended Damietta, but also harassed the enemy in their own camp by means of hordes of Bedouins. Not until he was forced, by a conspiracy of his troops in favour of his brother El-Faiz, to fly to Cairo, did the Christians succeed in getting across the Nile and completely surrounding Damietta. Order was soon restored in Egypt, owing to the arrival of Prince Muzzain, who had taken over the government of Damascus on the death of his father. The rebels were chastised, and both brothers proceeded towards Damietta: they could not succeed, however, in raising the siege, and the garrison diminished daily through hunger, sickness, and constant attacks, and the fortress soon fell into the hands of the Crusaders, almost without a blow (November 5, 1219). The Crusaders pillaged the town, taking from it four hundred thousand gold pieces. The Italians also settled there, and made it the seat of their commerce with Egypt. This conquest caused excitement in Europe, and the Pope called Pelagius “the second Joshua.”
If the Franks had been more at peace among themselves, they might easily have pushed forward to Cairo after the fall of Damietta. But the greatest discontent prevailed between the papal legate, Pelagius, and King John of Brienne, so that the latter soon after left Egypt, while Pelagius was forced to wait for reinforcements before he could get away from Damietta.
El-Kamil, meanwhile, reinforced his army with the help of the friendly Syrian princes, and, by destroying the channels and dams of the Nile canals, so endangered the Christian camp that they were soon forced to sue for peace, and offered to quit Damietta on the condition of an unmolested retreat. El-Kamil, equally anxious for peace, accepted these conditions (August, 1221). Scarcely had the Æyubites thus warded off: the threatening danger when they proceeded to fall out among themselves.
After the death of El-Kamil, who in the end was generally regarded as overlord, a new war broke out, in March, 1238, between his son El-Adil II., who was reigning in Egypt, and his brother Ayyub, who occupied Damascus. Ayyub conquered Egypt, but, in his absence, his uncle Ismail, Prince of Balbek, seized upon Damascus and made a league with the Franks in Palestine and several of the Syrian princes. Through this unnatural league, Ismail, however, estranged not only the Moslem inhabitants of Syria, but also his own army. Part of the army deserted in consequence to Ayyub, who was thus enabled easily to subdue the allied army (1240). Another coalition was formed against him a few years later, and this time Da’ud of Kerak was one of the allies. Ayyub sent a strong army of Egyptians, negroes, and Mamluks under the future sultan, Beybars, to Syria. The Syrian troops fought unwillingly against their fellow-believers in the opposite ranks, and the wild Chariz-mites, who had also joined the ranks, inspired them with terror, so that they deserted the field of battle in the neighbourhood of Gaza (October, 1244). The Christians, left to themselves, were not in a position to resist the enemy’s attacks; and the Egyptians made themselves masters of Jerusalem and Hebron, and in the following year obtained Damascus, Balbek, Ascalon, and Tiberias. In 1248 Ayyub came again into Syria, in order to chastise El-Malik en-Nasir, Prince of Aleppo, who had seized upon Hemessa when he heard of the coming Crusaders under Saint Louis. To this end he made peace with the natives of Aleppo, and returned to Jerusalem in order to make the necessary preparations for defence. The pilgrims, however, succeeded in landing, for Emir Fakhr ed-Din, the Egyptian commander, had taken to flight after a short skirmish, and the fortress was allowed to fall into the hands of the enemy (June, 1249). Ayyub now established a firm footing in the town of Cairo—which his father had founded—in a district intersected by canals, and harassed the Christian camp with his light cavalry. Louis was expecting reinforcements, but they did not arrive until the inundations of the Nile made any advance into the interior almost impossible. At last, on the 21st of December, the Christian army arrived at the canal of Ashmum Tanah, which alone separated them from the town of Mansuria. The Egyptians were now commanded by Emir Fakhr ed-Din. Ayyub had died a month before, but his wife, Shejret ed-Durr, kept his death a secret until his son Turan Shah should arrive from Mesopotamia. Fakhr ed-Din did everything in his power to retrieve his former error. He attacked the Christians when they were engaged in building a dam across the canal, hindering their work on the southern bank with his throwing-machines, destroying their towers with Greek fire; and when, in spite of all discouragements, their toilsome work was nearly finished, he rendered it useless by digging out a new basin, into which he conducted the water of the Ashmum canal.
On the 8th of February, 1250, the French crossed the canal, but, instead of collecting there, as the king had commanded, so as to attack the enemy en masse, several troops pressed forward against the Egyptians, and many, including the Count of Artois, the king’s brother, were killed by the valiant enemy under Beybars. The battle remained long undecided, for the Egyptians had barricaded Cairo so well that it could only be stormed at the cost of many lives, and after the capture the army needed rest. The Egyptians took advantage of this delay to bring a fleet up in the rear of the Egyptian ships, which, in combination with the fleet stationed near Mansuria, attacked and completely destroyed them. As soon as they were masters of the Nile, the Egyptians landed troops below the Christian camp, which was thus completely cut off from Damietta, and soon suffered the greatest hardships from lack of provisions. Under these circumstances, Louis opened negotiations with Turan Shah, and when these proved fruitless, nothing remained for him but to return to Damietta. Although they began their retreat by night, they did not thus escape the vigilance of the Egyptians. The fugitives were overtaken on the following morning, and so shut in by the enemy that resistance was impossible. A large portion of the army was cut to pieces, in spite of their surrender; the rest, together with the king and his brother, were taken prisoners and brought in triumph to Cairo. Turan Shah treated the king with consideration and hastened to conclude peace with the Bahritic Mamluks,—so called because they had been brought up on the Nile (Bahr), on the island Rhodha,—as soon as the ransom money of his prisoners was assured. The Bahrites grumbled at this peace because it left the Christians in Palestine in possession of their towns, and they forthwith murdered Turan Shah, with the help of Shejret ed-Durr, whom he had maltreated (May 2, 1250).