Crusades in the Holy Land after 1099: Campaigns, Alliances and the Fall of Acre

Jerusalem’s capture in 1099 did not end crusading in the eastern Mediterranean. Most of the First Crusade’s participants returned home, while those who remained had to defend new territories and obtain reinforcements. Over the next two centuries, Western Christian expeditions reached the Levant with changing aims: some sought to protect the new Crusader states, some tried to recover Jerusalem, and others attacked Egypt, whose rulers could threaten the kingdom. The states themselves depended on local alliances and intermittent help from Europe. Truces with neighbouring Muslim rulers and rivalries among Latin leaders shaped when and where those expeditions fought.

Campaigns in the Levant and Egypt continued from the fragile consolidation after 1099 to the fall of Acre in 1291. Their outcomes depended on political choices, military resources and access to supplies.

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Defending the states founded after 1099

The First Crusade left Western rulers in control of Jerusalem, Antioch and Edessa. The County of Tripoli was established in 1109. These territories had different vulnerabilities: Edessa lay inland in the north, while the Kingdom of Jerusalem depended on a long stretch of coastline as well as inland towns. The rulers needed soldiers and supplies, but reinforcements from Europe were uncertain. Italian fleets helped make some coastal conquests possible, and Pisa, Genoa and Venice received trading privileges in return for naval support.

After the main crusading army dispersed, the expedition of 1101 brought further Western forces but ended in heavy defeats in Anatolia. In the following years, smaller groups and naval expeditions contributed to the states’ expansion. King Baldwin I of Jerusalem captured Acre in 1104 and Beirut in 1110 with Genoese assistance. At Sidon in 1110, the supporting fleets included those of King Sigurd of Norway and Venice. The city of Tyre was taken in 1124 with Venetian help.

Defence also relied on institutions based in the region. The Templars began as a confraternity of knights committed to protecting pilgrims. The Hospitallers developed from a nursing confraternity into a military order. Such orders combined religious vows with armed service, helping maintain a presence in the region when temporary expeditions had returned to Europe. Their permanent garrisons supplemented the armies raised by local rulers and visiting crusaders.

The northern County of Edessa was especially exposed to attack. Its rulers had sometimes sought support from neighbouring powers, but such partnerships could shift with local rivalries. Damascus, for example, allied with the Kingdom of Jerusalem against Zengi, the ruler of Mosul and Aleppo, when his power threatened both. In 1144, while Edessa’s ruler Joscelin II was away with much of his army, Zengi besieged and captured the city. The loss of this northern state prompted the next major expedition from Europe.

The Second Crusade and the failed siege of Damascus

Pope Eugenius III called the Second Crusade in 1145, offering spiritual rewards to those who took the cross and protections for their property and debts. King Louis VII of France and King Conrad III of Germany led separate armies east. Their forces suffered severe losses on the journey through Anatolia, and only part of the original host reached the Levant. The expedition thus arrived in the region weakened and without a shared plan for what to do next.

In 1148, the crusader leaders chose to attack Damascus. The decision reflected its importance as a major city, but also the expectation that it might be easier to take than territories held by Zengi’s successors. Damascus had previously been an ally of Jerusalem against Zengi. Its ruler, Mu’in ad-Din Unur, now feared the growing power of Nur al-Din, Zengi’s son. Yet the European leaders and the rulers of Jerusalem did not agree on how to use that rivalry or what they would gain by taking the city.

The siege began on 24 July, but the attackers soon faced shortages and attacks by Damascene forces. Nur al-Din’s approaching support made the prospect of a prolonged siege still worse. After only a few days, the crusaders abandoned the attempt and withdrew. Plans to attack Ascalon also collapsed. Damascus later came under Nur al-Din’s control in 1154. The Second Crusade gained no lasting territory in the Levant, and mistrust among Western leaders and between Westerners and Byzantines further hindered later cooperation.

Egypt, political division and Saladin’s rise

After the Second Crusade, Nur al-Din expanded his influence in Syria. The Kingdom of Jerusalem also sought to extend its power, and Egypt became a principal arena of competition. Its rulers faced internal conflict, and both Nur al-Din and King Amalric I of Jerusalem intervened in the country’s affairs. In 1169, Nur al-Din’s general Shirkuh became vizier of Egypt, a senior minister who exercised great political power. On Shirkuh’s death, his nephew Saladin succeeded him in the office.

Saladin ended Fatimid rule in Egypt in 1171. After Nur al-Din’s death in 1174, he established control over Damascus and then extended his authority elsewhere in Syria. He took Aleppo in 1183, and the ruler of Mosul submitted to him in 1186. This consolidation changed the military balance: Saladin could draw on resources from both Egypt and Syria, while the Crusader states remained dependent on alliances and divided leadership.

A breach of a truce helped bring the conflict to a head. In 1187 Raynald of Châtillon attacked a Muslim caravan, prompting Saladin to gather his forces. On 4 July, at Hattin, the Jerusalemite field army was defeated after a difficult march. King Guy was captured, and the army’s defeat left the kingdom poorly equipped to resist further attacks. Saladin executed Raynald and captured Jerusalem, which surrendered on 2 October. He took much of the territory previously held by the Crusader states, although Tyre continued to resist.

The Third Crusade restores a coastal foothold

The fall of Jerusalem prompted a new expedition led by the kings of France and England and the Holy Roman Emperor Frederick I. In England and France, a levy called the Saladin tithe, set at one tenth of income and movable goods, helped fund the campaign. Frederick marched overland, but drowned in 1190 before reaching the Levant; much of his army turned back. The French and English kings travelled by sea, bringing forces and supplies to the coast.

Acre was a vital port and the focus of a long siege that began in 1189. The army besieging the city was itself threatened by Saladin’s forces, so the crusaders had to maintain their camp as well as press the attack. The arrival of the French and English armies strengthened the siege, and Acre surrendered in July 1191. Richard I of England then defeated Saladin’s forces at Arsuf and secured Jaffa. These gains restored a defensible stretch of coast, but they did not give the crusaders the strength or agreement needed to take Jerusalem.

Richard and Saladin concluded a truce in 1192. It confirmed Muslim control of Jerusalem but allowed unarmed Christian pilgrims to visit its holy sites. The crusaders retained the coastal territory between Tyre and Jaffa, and Christian pilgrims and merchants could travel under the agreement. The Third Crusade therefore achieved a limited military objective: it preserved a smaller Kingdom of Jerusalem on the coast rather than restoring the city itself. The crusaders’ failure to agree on a unified advance inland, and the risks of a march far from their supplies and ports, helped define that limit.

Egyptian campaigns and negotiated recoveries

Later expeditions did not always aim first at Jerusalem. In 1197, a German-led campaign reached the coast and captured Botrun, Sidon and Beirut. It ended when news arrived of the death of Emperor Henry VI. More broadly, Egypt remained a target because control of its ports and resources seemed a way to pressure the rulers who held Jerusalem and Syria.

The Fifth Crusade reached the Levant in 1217 and attacked Damietta, a port in the Nile Delta. The crusaders took the city in 1219 after a siege, but did not secure a lasting advantage. Sultan al-Kamil offered terms that included restoring territory lost after 1187, but the crusader leaders rejected the offer. When their army advanced south in 1221, it faced Egyptian forces near the Nile. The river’s flooding and the opening of sluices made the route impassable and cut the crusaders off from supplies. They agreed to withdraw from Egypt, surrender Damietta and accept an eight-year truce.

The Sixth Crusade produced a different result because it relied on negotiation rather than a major battle. In 1228 Emperor Frederick II arrived with a small force, while al-Kamil faced conflict with other Ayyubid rulers. The Treaty of Jaffa, agreed in 1229, returned Jerusalem and several other places to Christian control for a ten-year truce. Muslim holy sites in Jerusalem, including the Dome of the Rock and al-Aqsa Mosque, remained under Muslim control. The agreement restored the city to the Kingdom of Jerusalem, but its terms reflected a political bargain, not a military defeat of al-Kamil.

The Barons’ Crusade of 1239–1241 also depended on divisions among the Ayyubid rulers. The expedition suffered defeat at Gaza in 1239, but negotiations with rival rulers later brought a new agreement. In 1241 Richard of Cornwall helped secure the restoration of Jerusalem and other territory to the Franks. These recoveries were temporary: Khwarazmian forces took and sacked Jerusalem in 1244, after this campaign had ended. Jerusalem’s changing fortunes reflected the shifting balance among Ayyubid rulers as much as the strength of crusader armies.

Mamluk expansion and the loss of the mainland states

Louis IX of France led another campaign against Egypt in 1248. The crusaders captured Damietta, but their advance toward Cairo ended in defeat near al-Mansurah. Louis was captured and released for a ransom; the crusaders surrendered Damietta and withdrew. While Louis later remained in the region and strengthened coastal defences, his expedition did not reverse the loss of power in the interior.

In 1250, the Mamluks took power in Egypt from the Ayyubids, Saladin’s family dynasty. Mamluks were soldiers recruited through military slavery and trained for service; senior commanders, usually freed by the time they held high office, formed the new ruling elite. In 1260 Mamluk forces defeated the Mongols at Ain Jalut and established their authority in Muslim Syria. Under Baybars, the Mamluk ruler from 1260, attacks on the Crusader states became more sustained. His forces took a series of coastal and inland strongholds and captured Antioch in 1268. The loss of fortified centres reduced the territory and resources available to the Latin rulers.

European support remained intermittent and often followed other priorities. In 1270 Louis IX led a campaign against Tunis in North Africa rather than the Levant. Edward, then heir to the English throne, reached Acre in 1271, but did not undertake a major campaign; a truce followed in 1272. Meanwhile, rivalries among the Latin states and their supporters weakened their ability to act together. A war between Genoese and Venetian communities in the mid-thirteenth century divided merchants, military orders and nobles in the region.

In 1289 the Mamluk ruler Qalawun captured Tripoli. After his death, his son Khalil besieged Acre, the principal remaining Latin stronghold on the mainland. Acre fell on 18 May 1291; resistance in the Templar fortress continued until 28 May. The Mamluks soon took the other remaining mainland positions; the Templars evacuated Château Pèlerin by sea in August. The conquest brought massacres and enslavement, though some people escaped to Cyprus. Latin rule in the mainland Levant ended, even as plans for further expeditions continued.

Why the outcomes differed

The size of an expedition alone did not determine its success. The Second Crusade brought kings and large forces but suffered heavy losses on the way and failed to agree on a viable target. The Third Crusade recovered important ports and held a coastal corridor, but its leaders did not sustain a united campaign for Jerusalem. The Fifth Crusade captured Damietta yet lost its advantage when the army advanced into terrain where the Nile and Egyptian forces could disrupt its supplies.

Local politics could create opportunities as well as dangers. Rivalries among Muslim rulers made the agreements of 1229 and 1241 possible, while Saladin’s consolidation of power helped make the defeat at Hattin and the loss of Jerusalem possible. The crusader states also depended on local cooperation, naval access and reinforcements from Europe. When Mamluk rulers mounted repeated campaigns and European aid arrived only in limited or diverted forms, the remaining mainland strongholds became increasingly difficult to defend. Acre’s fall in 1291 was the end of Latin territorial rule on the mainland, not the end of crusading plans.