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Battle of Mansura

Foucault's Pendulum

The Battle of Mansura is a defining military reversal in the account of Louis IX’s Egyptian campaign: a difficult river crossing becomes an advance into enemy territory, and an effort to avoid dishonor helps turn that advance into catastrophe. The episode links tactical failure to competition for glory, then sets the scale of the defeat against the polished, almost theatrical manner in which Joinville’s chronicle presents war.

Crossing the River

The Saracens have dug in beyond the river near Mansura. The French attempt to make a dam and ford, protected by mobile towers, but the defenders possess Greek fire, learned from the Byzantines. Its barrel-like container, fitted with a large spear-shaped tail, is hurled like a lightning bolt. At night, its light makes the Christian camp as bright as day, even as the fire burns through it.

Amid the burning camp, a Bedouin betrays the defenders’ position for three hundred bezants, leading the king and his men to a ford. Louis IX decides to attack, but the crossing is perilous: many men drown or are swept away, while three hundred mounted Saracens wait on the opposite bank. Once the main force has come ashore, the Templars take their planned place in the vanguard, followed by the Comte d’Artois. The Saracen horsemen flee, and the Templars wait for the rest of the Christian army. Artois instead pursues the retreating enemy with his men.

Artois and the Templars

The Templars join the assault because they are anxious to avoid dishonor, but they reach Artois only after he has entered the enemy camp and begun a massacre. The Saracens withdraw toward Mansura. Artois follows, pursuing the very movement that draws the Christians farther into danger.

The Templars try to restrain him. Brother Gilles, supreme commander of the Temple, first praises Artois for an extraordinary overseas feat. Artois rejects the attempt to slow him down and accuses the Templars and Hospitalers of having withheld their strength: in his view, they could have conquered the territory earlier had they truly wished to. His taunt makes the question of military judgment a question of honor. The Templars, pressed to prove that they are second to none, charge into the city after him.

Reversal and Loss

The advance repeats the error of Ascalon. While the Christians are occupied sacking the sultan’s palace, their force loses its organization; the enemy regroups and attacks. The reversal is therefore not simply a failed crossing or an unexpected setback. The crusaders’ pursuit carries them into the city, their contest over courage prevents a withdrawal, and the distraction of plunder leaves them exposed when the defenders return.

According to the account, some say that before following Artois into the city, Brother Gilles addressed him with stoic clarity: “My Lord, my brothers and I are not afraid. We follow you. But great is our doubt that any of us will return.” Artois is killed, as are many knights, including 280 Templars. Gilles’s reported words give the charge a grim foreknowledge, while the outcome confirms that the danger had been recognized even as the force proceeded.

Defeat and Its Chronicle

The narrator calls the outcome more than a defeat: it is a disgrace. Yet Joinville does not record it in those terms. The contrast makes the battle significant not only for its losses but also for the difference between what happened and how a chronicler can render it. Joinville’s battles and skirmishes become graceful ballets, filled with appeals to the Lord and scenes of the king grieving for a loyal follower. Their visual polish—the vivid trappings and shining weapons set against the desert and sea—stands in tension with the account’s recognition of war as daily killing.

The battle thus ends on two registers: as a military disaster caused by pursuit, rivalry, and the loss of order, and as a remembered episode whose literary presentation can soften the violence without erasing it. The narrator leaves open whether the Templars themselves experienced their daily warfare in Joinville’s stylized way. That uncertainty sharpens the contrast between the chronicler’s elegant spectacle and the costly confusion of Mansura.