An outnumbered English army destroys the French cavalry through superior tactics and use of the longbow. This victory leads to a long but successful siege of the port of Calais, followed by an 8-year truce. In some areas, nearly two thirds of the population will die. Edward's eldest son, the Black Prince, leads the army which crushes the French army near Poitiers. The French king and a thousand of his knights are taken prisoner.
Civil war erupts in France.
Edward renounces his claim to the French throne, but receives Guienne, Ponthieu, and Calais. The French pay a ransom for the return of King John. The Black Death returns to England and France in 1861. He had been ransomed in return for the captivity of three sons, but when one of his sons escaped, John was honorbound to return. Harsh English taxes in Aquitaine lead to a revolt in 1369, prompting Charles V of France to renew the war.