Battle of Bouvines, battle on July 27, 1214, that gave a decisive victory to the French king Philip II Augustus over an international coalition of the Holy Roman emperor Otto IV, King John of England, and the French vassals Ferdinand (Ferrand) of Portugal, count of Flanders, and Renaud (Raynald) of Dammartin, count of Boulogne. The victory enhanced the power and the prestige of the French monarchy in France and in the rest of Europe.
John had organized the coalition, first recruiting Otto, his nephew, in order to reclaim lands lost in battles against Philip a decade earlier. The leaders of the coalition had planned for John to land with his forces in western France, to stir up revolts in Aquitaine and Anjou, and then to march on Paris, while the imperial forces and those of the counts of Flanders and Boulogne advanced on Paris from the north. The plan failed when John was defeated at La Roche-aux-Moines, near Angers, on July 2, 1214; Philip was then able to take the offensive in the north. A decisive battle was fought in the marshy plain between Bouvines (Bouvignies) and Tournai in Flanders, where a narrow bridge had slowed Philip’s forces as they were moving westward toward Lille. Alerted to the imminent arrival of his enemies, Philip turned his force to meet the coalition’s troops.
The battle began with cavalry fighting on the French right wing. In the center, the imperial army—containing powerful infantry from the Low Countries—drove forward, but the central French cavalry, commanded by Philip and his councilor, a Hospitaller knight and skilled strategist named Guérin, forced the imperial infantry back. The French triumphed on their left wing, and William Longsword, the Earl of Salisbury, was taken prisoner. The French cavalry were also victorious on the right, and Count Ferdinand of Flanders was captured. Finally, in the center, coalition forces briefly broke through, directly threatening Philip until the two French wings closed in to cut off the retreat of the imperial army’s center. Renaud of Boulogne made a brave last stand but was eventually captured. The furious contest ended in a clear French victory: Renaud and Ferdinand were taken prisoner, though Otto managed to escape.
As a result of the two battles, Philip Augustus was confirmed in possession of most of the former English lands in France. With the loss of most of the formerly extensive Angevin Empire. King John was so badly weakened financially and politically that he faced the growing opposition of his barons and was forced to sign the Magna Carta charter of rights the following year. Emperor Otto was deposed by Frederick II Hohenstaufen in 1215 as well.
Losses: French, 1,000 of 15,000; Coalition, 1,000 dead and 9,000 captured of 25,000.