Battle of Bouvines

Definition and stakes

Charles Francis Atkinson 1911 Encyclopædia Britannica (1911)

Indeed, except in the Crusades, where men of high and of low degree alike fought for their common faith, and in sieges, where cavalry was powerless and the services of archers and labourers were at a premium, it became quite unusual for infantry to appear on the field at all.
The tactics of feudal infantry at its best were conspicuously illustrated in the battle of Bouvines, where besides the barons, knights and sergeants, the Brabançon mercenaries (heavy foot) and the French communal militia opposed one another. On the French right wing, the opportune arrival of a well-closed Bouvines.
Source: Wikisource

J. N. Larned History for ready reference, Volumes 1 to 5 (1895)

Whereupon the victorious pope commanded his French champion to forego his intended attack. Philip, under these circumstances, determined to use the army he had assembled against a troublesome and contumacious vassal, the count of Flanders. The pope approved, and Flanders was overrun. King John led an English force across the channel to the help of the Flemish count, and Otho, the German king or emperor, who was king John's nephew, joined the coalition, to antagonize France and the pope. The battle of Bouvines was the decisive conflict of the war.
Source: Gutenberg

Portrait of William Stearns Davis William Stearns Davis Life on a Mediaeval Barony

For them there is only one battleBouvines. The seneschal, ever the slave of his youthful masters, after suitable urgings, begins.
"Now you must know, my fair damoisieux, that all this took place six years since, in the year 1214, upon the seven-and-twentieth day of July. For our sins it was extremely hot that season, so that all of us have, I trust, obtained some remission from purgatory. God grant that next time we have a great battle it be in the pleasant spring or autumn, though otherwise the saints showed to us French a great mercy.
Source: Gutenberg

Get perspective with Kwize: daily news enlightened by great literature