Agincourt was an overwhelming victory for Henry V and England. After it, the English went on to conquer Normandy. Then, in 1420, Henry forced the French to agree to the treaty of Troyes, which made him the heir to the French throne. But his premature death in 1422 turned the tide of the Hundred Years' War. The French recovered and pushed their enemies out of France. By 1453, only Calais remained in English hands. The Hundred Years ' War was over.