Hundred Years' War: Bertrand du Guesclin and a French army defeat the Anglo-Navarrese army of Charles the Bad at Cocherel.

The Hundred Years' War was a conflict between the kingdoms of England and France and a civil war in France during the Late Middle Ages. It emerged from feudal disputes over the Duchy of Aquitaine and was triggered by a claim to the French throne made by Edward III of England. The war grew into a broader military, economic, and political struggle involving factions from across Western Europe, fuelled by emerging nationalism on both sides. The periodisation of the war typically charts it as taking place over 116 years. However, it was an intermittent conflict which was frequently interrupted by external factors, such as the Black Death, and several years of truces.

Bertrand du Guesclin, nicknamed "The Eagle of Brittany" or "The Black Dog of Brocéliande", was a Breton knight and an important military commander on the French side during the Hundred Years' War. From 1370 to his death, he was Constable of France for King Charles V. Well known for his Fabian strategy of avoiding major battles where possible, he took part in seven pitched battles and won the five in which he held command.

Charles II, known as the Bad, was King of Navarre beginning in 1349, as well as Count of Évreux beginning in 1343, holding both titles until his death in 1387.

The Battle of Cocherel was fought on 16 May 1364 between the forces of Charles V of France and the forces of Charles II of Navarre, over the succession to the dukedom of Burgundy. The result was a French victory.