Battle of Fariskur

On April 6, 1250, the crusader army of Louis IX, retreating from Mansourah towards Damietta, was surrounded and annihilated at Fariskur by Mamluk forces. After two months of siege in front of Mansourah, decimated by fighting, epidemics and hunger, the crusader army tried to regain Damietta. But the retreat turned into a rout: harassed by the Mamluk cavalry, deprived of supplies, the army was surrounded at Fariskur. The crusaders, weakened and demoralized, attempted a last desperate breakthrough but failed. Louis IX, refusing to flee, surrendered with his surviving knights. It is the first and only time in French history that a Capetian king was taken prisoner on a battlefield. The king's captivity, his exorbitant ransom and the loss of Damietta mark the complete failure of the Seventh Crusade.

After the defeat of Mansourah on February 8, 1250, the Crusader army remained blocked in front of the city, unable to advance towards Cairo. Losses were enormous, epidemics (dysentery, scurvy) ravaged the camp, and supplies ran out. The Mamluk Sultan Turanshah, arriving from Asia Minor, reinforced the blockade and cut the supply route to Damietta. In March, Louis IX, himself ill, understood that the situation was desperate and ordered a retreat. The army, reduced to less than 10,000 able-bodied men, began a death march along the Nile. The Mamluks, masters of the terrain, constantly harassed the crossed columns, attacking the rearguard and capturing the stragglers. At Fariskur, the Mamluks cut the road and completely surrounded the crusader army, which could no longer advance or obtain supplies. The crusader fleet, blocked in Damietta, cannot intervene. Louis IX, aware of the uselessness of prolonged resistance, chose to negotiate surrender to avoid a total massacre.

The Battle of Fariskur was less a pitched battle than a methodical encirclement and forced surrender. The Mamluks, commanded by Turanshah and Baybars, used their superiority in mobility and knowledge of the terrain. They harass the retreating Crusader army, attacking the flanks and rearguard with mounted archers, avoiding close combat with heavy chivalry. At Fariskur, they cut off the retreat route and completely surrounded the crusaders, establishing defensive positions on the high ground. The crusaders, exhausted, sick and demoralized, attempted a desperate breakthrough but failed in the face of well-defended positions. The French heavy cavalry, deprived of space to maneuver and weakened by hunger and disease, lost all effectiveness. The Mamluk archers, posted on the heights, decimated the crossed troops who tried to force the passage. Louis IX, understanding that all resistance is futile, orders the surrender to avoid a massacre. The Mamluks, respectful of the value of the king, accepted negotiation rather than extermination. The battle demonstrated the effectiveness of the strategy of harassment and encirclement against a retreating army, deprived of supplies and reinforcements.

The defeat of Fariskur and the capture of Louis IX mark the complete failure of the Seventh Crusade. The king of France is taken captive to Cairo with his main barons. Negotiations resulted in a draconian treaty: ransom of 800,000 gold bezants (equivalent to approximately 400,000 tourney pounds, or nearly half of the annual income of the kingdom of France), immediate restitution of Damietta, and release of Muslim prisoners. Queen Margaret, remaining in Damietta, must organize payment of the ransom, selling the crown jewels and borrowing from the Templars and Italian merchants. Louis IX was released on May 6, 1250 after payment of the first tranche. The failure of the crusade temporarily weakened royal prestige, but Louis IX, deeply marked by this experience, undertook administrative reforms and prepared a new crusade (the eighth, in 1270). For Egypt, the victory definitively established the rise in power of the Mamluks, who overthrew the Ayyubids the same year and established their sultanate, which would dominate Egypt and Syria until 1517. The defeat also revealed the strategic limits of the Crusades: without mastery of local geography and without local allies, even a well-equipped army could not win.