The occupation of the Christian holy places in Palestine and the destruction of the Holy Sepulcher by Caliph Al Hakim led to a series of eight campaigns, known as the Crusades, undertaken by Christians of western Europe to recover the Holy Land from the Muslims. The Crusaders in Lebanon had a very large impact on the country.

First Crusade

In the 7th century Jerusalem was taken by the caliph Umar. Pilgrimages were not cut off at first, but early in the 11th century the Fatimid caliph Hakim began to persecute the Christians and despoiled the Holy Sepulcher. Persecution abated after his death in 1021, but relations remained strained and became more so when Jerusalem passed in 1071 from the comparatively tolerant Egyptians to the Seljuk Turks, who in the same year defeated the Byzantine emperor Romanus IV at Manzikert.

Late in the 11th century Byzantine Emperor Alexius I, threatened by the Seljuk Turks, appealed to the West for aid. This was not the first appeal of the kind; while it may have helped to determine the time and the route of the First Crusade, 1095–99, its precise import is difficult to estimate. Direct impetus was given the crusade by the great speech of Pope Urban II at the Council of Clermont (now Clermont-Ferrand) in 1095. Urban exhorted Christendom to go to war for the Sepulcher, promising that the journey would count as full penance and that the homes of the absent ones would be protected by a truce. The battle cry of the Christians, he urged, should be Deus volt [God wills it]. From the crosses that were distributed at this meeting the Crusaders took their name. Bishop Ademar of Le Puy-en-Velay was designated as papal legate for the crusade, and Count Raymond IV of Toulouse was the first of the leaders of the expedition to take the cross.

Proclaimed by many wandering preachers, notably Peter the Hermit, the movement spread through Europe and even reached Scandinavia. The chief factors that contributed to this enthusiastic response were the increase in the population and prosperity of Western Europe; the high point that religious devotion had reached; the prospect of territorial expansion and riches for the nobles, and

of more freedom for the lower classes; the colonial projects of the Normans (directed against the Byzantine Empire as much as against the Muslim world); the desire, particularly of the Italian cities, to expand trade with the East; and a general awakening to the lure of travel and adventure.

The conflict between spiritual and material aims, apparent from the first, became increasingly serious. The organized host of the crusade was preceded in the spring of 1096 by several undisciplined hordes of French and German peasants. Walter Sans Avoir (Walter the Penniless) led a French group, which passed peacefully through Germany and Hungary but sacked the district of Belgrade. The Bulgarians retaliated, but Walter reached Constantinople by midsummer. He was joined there by the followers of Peter the Hermit, whose progress had been similar. A German group started off by robbing and massacring the Jews in the Rhenish cities and later so provoked the king of Hungary that he attacked and dispersed them.

The bands that had reached Constantinople were speedily transported by Alexius I to Asia Minor, where they were defeated by the Turks. The survivors either joined later bands or returned to Europe. Alexius began to take fright at the proportions the movement was assuming. When, late in 1096, the first of the princes, Hugh of Vermandois, a brother of Philip I of France, reached Constantinople, the emperor persuaded him to take an oath of fealty. Godfrey of Bouillon and his brothers Eustace and Baldwin (later Baldwin I of Jerusalem), Raymond IV of Toulouse, Bohemond I, Tancred, Robert of Normandy, and Robert II of Flanders arrived early in 1097. At Antioch all except Tancred and Raymond (who promised only to refrain from hostilities against the Byzantines) took the oath to Alexius, which bound them to accept Alexius as overlord of their conquests. Bohemond's subsequent breach of the oath was to cause endless wrangling.

The armies crossed to Asia Minor, took Nicaea (1097), defeated the Turks at Dorylaeum, and took Antioch (1098). Their campaign was completed in July, 1099, by the taking of Jerusalem, where they massacred the Muslims and Jews. The election of Godfrey of Bouillon as defender of the Holy Sepulcher marked the beginning of the Latin Kingdom of Jerusalem. A Latin patriarch was elected. Other fiefs, theoretically dependent on Jerusalem, were created as the crusade's leaders moved to expand their domains. These were the counties of Edessa (Baldwin) and Tripoli (Raymond) and the principality of Antioch (Bohemond).

The First Crusade thus ended in victory. It was the only crusade that achieved more than ephemeral results. Until the ultimate fall (1291) of the Latin Kingdom, the brunt of the fighting in the Holy Land fell on the Latin princes and their followers and on the great military orders, the Knights Hospitalers and the Knights Templars, that arose out of the Crusades.

The later Crusades were for the most part only expeditions to assist those who already were in the Holy Land; they are a single current, and dates are given them only for convenience.

Second Crusade

The Second Crusade, 1147–49, was preached by St. Bernard of Clairvaux after the fall (1144) of Edessa to the Turks. It was led by Holy Roman Emperor Conrad III, whose army set out first, and by King Louis VII of France. Both armies passed through the Balkans and pillaged the territory of the Byzantine emperor, Manuel I, who provided them with transportation to Asia Minor in order to be rid of them. The German contingent, already decimated by the Turks, merged (1148) with the French, who had fared only slightly better, at Acre (Akko). A joint attack on Damascus failed because of jealousy and, possibly, treachery among the Latin princes of the Holy Land. Conrad returned home in 1148 and was followed (1149) by Louis. The Second Crusade thus ended in dismal failure.

Third Crusade

The Third Crusade, 1189–92, followed on the capture (1187) of Jerusalem by Saladin and the defeat of Guy of Lusignan, Reginald of Châtillon, and Raymond of Tripoli at Hattin. The crusade was preached by Pope Gregory VIII but was directed by its leaders—Richard I of England, Philip II of France, and Holy Roman Emperor Frederick I. Frederick set out first, but was hindered by the Byzantine emperor, Isaac II, who had formed an alliance with Saladin. Frederick forced his way to the Bosporus, sacked Adrianople (Edirne), and compelled the Greeks to furnish transportation to Asia Minor. However, he died (1190) in Cilicia, and only part of his forces went on to the Holy Land. Richard and Philip, uneasy allies, arrived at Acre in 1191. The city had been besieged since 1189, but the siege had been prolonged by dissensions between the two chief Christian leaders, Guy of Lusignan and Conrad, marquis of Montferrat, both of whom claimed the kingship of Jerusalem.

The city was nevertheless starved out by July, 1191; shortly afterward Philip went home. Richard removed his base to Jaffa, which he fortified, and rebuilt Ascalon (Ashqelon), which the Muslims had burned down. In 1192 he made a three-year truce with Saladin; the Christians retained Jaffa with a narrow strip of coast (all that remained of the Latin Kingdom of Jerusalem) and the right of free access to the Holy Sepulcher. Antioch and Tripoli were still in Christian hands; Cyprus, which Richard I had wrested (1191) from the Byzantines while on his way to the Holy Land, was given to Guy of Lusignan. In Oct., 1192, Richard left the Holy Land, thus ending the crusade.

Fourth, Children's, and Fifth Crusades

Pope Innocent III launched the Fourth Crusade, 1202–1204, which was totally diverted from its original course. The Crusaders, led mostly by French and Flemish nobles and spurred on by Fulk of Neuilly, assembled (1202) near Venice. To pay some of their passage to Palestine they aided Doge Enrico Dandolo and his Venetian forces in recovering Zara (Zadar) on the Dalmatian coast from the Hungarians. The sack of Zara (1202), for which Innocent III excommunicated the crusaders, prefaced more serious political schemes. Alexius (later Alexius IV), son of the deposed Byzantine emperor Isaac II and brother-in-law of Philip of Swabia, a sponsor of the crusade, joined the army at Zara and persuaded the leaders to help him depose his uncle, Alexius III. In exchange, he promised large sums of money, aid to the Crusaders in conquering Egypt, and the union of the Roman and the Eastern churches. The actual decision to turn on Constantinople was largely brought about by Venetian pressure. The fleet arrived at the Bosporus in 1203; Alexius III fled, and Isaac II and Alexius IV were installed as joint emperors while the fleet remained outside the harbor. In 1204, Alexius V overthrew the emperors. As a result the Crusaders stormed the city, sacked it, divided the rich spoils with the Venetians according to a prearranged plan, and set up the Latin Empire of Constantinople.

There followed the pathetic interlude of the Children's Crusade, 1212. Led by a visionary French peasant boy, Stephen of Cloyes, children embarked at Marseilles, hoping that they would succeed in the cause that their elders had betrayed. According to later sources, they were sold into slavery by unscrupulous skippers. Another group, made up of German children, went to Italy; most of them perished of hunger and disease.

Soon afterward Innocent III and his successor, Honorius III, began to preach the Fifth Crusade, 1217–21. King Andrew II of Hungary, Duke Leopold VI of Austria, John of Brienne, and the papal legate Pelasius were among the leaders of the expedition, which was aimed at Egypt, the center of Muslim strength. Damietta (Dumyat) was taken in 1219 but had to be evacuated again after the defeat (1221) of an expedition against Cairo.

Sixth Crusade

The Sixth Crusade, 1228–29, undertaken by Holy Roman Emperor Frederick II, was simply a peaceful visit, in the course of which the emperor made a truce with the Muslims, securing the partial surrender of Jerusalem and other holy places. Frederick crowned himself king of Jerusalem, but, occupied with Western affairs, he did nothing when the Muslims later reoccupied the city. Thibaut IV of Navarre and Champagne, however, reopened (1239) the wars, which were continued by Richard, earl of Cornwall. They were unable to compose the quarrels between the Knights Hospitalers and Knights Templars. In 1244 the Templars, who advocated an alliance with the sultan of Damascus rather than with Egypt, prevailed.

Seventh, Eighth, and Ninth Crusades

A treaty (1244) with Damascus restored Palestine to the Christians, but in the same year the Egyptian Muslims and their Turkish allies took Jerusalem and utterly routed the Christians at Gaza. This event led to the Seventh Crusade, 1248–54, due solely to the idealistic enterprise of Louis IX of France. Egypt again was the object of attack. Damietta fell again (1249); and an expedition to Cairo miscarried (1250), Louis himself being captured. After his release from captivity, he spent four years improving the fortifications left to the Christians in the Holy Land.

The fall (1268) of Jaffa and Antioch to the Muslims caused Louis IX to undertake the Eighth Crusade, 1270, which was cut short by his death in Tunisia. The Ninth Crusade, 1271–72, was led by Prince Edward (later Edward I of England). He landed at Acre but retired after concluding a truce. In 1289 Tripoli fell to the Muslims, and in 1291 Acre, the last Christian stronghold, followed.