Hundred Years' War
Historians commonly divide the war into three phases separated by truces: the Edwardian War (1337–1360), the Caroline War (1369–1389), and the Lancastrian War (1415–1453). Local conflicts in neighbouring areas, which were contemporarily related to the war, including the War of the Breton Succession (1341–1365), the Castilian Civil War (1366–1369), the War of the Two Peters (1356–1369) in Aragon, and the 1383–85 crisis in Portugal, were availed by the parties to advance their agendas. Later historians adopted the term "Hundred Years' War" as a historiographical periodisation to encompass all of these events, thus constructing the longest military conflict in European history.
Treaty of Tours
The Hundred Years' War (1337–1453) now raged for more than a century between the houses of Valois and Plantagenet, who were both contesting the throne of France. In 1420, the Treaty of Troyes was signed which stipulated the marriage of Henry V of England to Catherine of Valois, daughter of Charles VI of France, and also stated that Henry and his heirs would inherit the throne of France upon Charles VI’s death. With the death of both kings in 1422, the thrones of France and England passed to the infant Henry VI of England, son of Henry V and maternal grandson of Charles VI. Charles of Valois, son of Charles VI, disputed his dispossession of the French kingdom, and claimed the French throne as Charles VII. The military efforts conducted by Charles against the territories held by the English in France rendered the treaty of Troyes moot and the Hundred Years' War continued.