Setting the scene
Charles V, called 'the Wise,' became king of France in 1364, inheriting a kingdom devastated by the Hundred Years' War. His father John II had been captured at Poitiers (1356) and died in English captivity in 1364. The Treaty of Brétigny (1360) had ceded vast territories to England, and the Jacquerie peasant revolt (1358) and Parisian uprising under Étienne Marcel had nearly destroyed royal authority. France was bankrupt, demoralized, and occupied. Charles, who had served as regent during his father's captivity, was a sickly, scholarly man—unlike the warrior kings before him—but proved a brilliant administrator.
What happened
Charles V avoided pitched battles, instead waging a war of attrition. He appointed Bertrand du Guesclin as Constable of France, who used Fabian tactics—avoiding major battles, retaking fortresses one by one, and harassing English supply lines. Charles reformed taxation, creating the first permanent royal taxes (the fouage and gabelle), and rebuilt the army. He exploited English weaknesses—Edward the Black Prince's illness and Edward III's senility—and supported Castile against England. By 1375, French forces had recaptured most territories lost at Brétigny, including Poitou, Saintonge, and Périgord.
Why it still matters
When Charles died in 1380, he left France stable, solvent, and largely free of English occupation—only Calais, Bordeaux, and Bayonne remained English. He had also strengthened royal administration, founded the first royal library (basis of the Bibliothèque nationale), and patronized scholars like Nicole Oresme. His reign demonstrated that a non-military king could succeed through intelligence and administration. However, his son Charles VI's madness after 1392 undid much of his work, leading to renewed civil war and English invasion under Henry V. Charles V remains the architect of France's recovery from its darkest hour.
Background
He recovered much territory before his death. Even centuries later, this episode remains a reference point for how empires rise, fracture, and transform.