The Battle of Bouvines was the 1214 battle in which Philip II of France defeated a coalition led by Emperor Otto IV and Count Ferdinand of Flanders.
Fought on 27 July 1214 in the County of Flanders, the battle was part of a wider conflict involving the Capetian king, the Holy Roman Empire, and English interests. King John of England supported the coalition but attacked from the west and was defeated separately at the Battle of La Roche-aux-Moines.
Philip’s victory at Bouvines strengthened the French monarchy and weakened the position of his enemies. Otto IV lost influence in the Empire, while Ferdinand of Flanders was captured and held prisoner by the French.
The battle is also connected to the political crisis that led to Magna Carta in England. John’s military failures against Philip helped persuade English barons to challenge his rule in 1215. Bouvines is sometimes confused with Crécy or Poitiers, later Hundred Years’ War battles involving English and French armies.