In any event, Thury and the surrounding region suffered greatly during the Crisis of the Late Middle Ages, including the Hundred Years' War. It was ravaged by roaming armies, especially in 1411 during an episode of the Armagnac–Burgundian Civil War and in 1423 in the run-up to the Battle of Cravant. Security did not return until well after the Peace of Arras in 1435. Thury was (re-)populated by newcomers (known as "horsains", "foreigners") from other parts of the Kingdom of France. The village castle was built around that time. The church was rebuilt in the late 15th century and completed in 1503, with the portal sculpted in 1521. In 1542, Francis I granted Thury by letters patent the right to hold a weekly market and three fairs a year (and also to erect fortifications around the village), which was reaffirmed by Henry III in 1576 and Louis XIV in 1669.