Chivalry and Betrayal: The Hundred Years' War to confirm his legitimacy resumed the war with France now led by a king who was insane. In 1415 he landed at Harfleur which fell after a long siege weakening the English army. Against advice Henry led his army on a chevauchée to English held Calais but was intercepted by a far larger French army at Agincourt and at the ensuing battle Henry's archers killed the cream of French nobility. At Agincourt Henry V, the son of a usurper, had proved his right to be King and he was determined to regain Normandy and recreate the Duchy and landed in
John the Fearless King of France, John backed away and decided to ally himself with the Armagnacs. Although he talked of helping his sovereign, his troops took no part in the Battle of Agincourt in 1415, although two of his brothers, Antoine, Duke of Brabant, and Philip II, Count of Nevers, died fighting for France during the battle. Two years later, with the rivalry between Burgundians and Armagnacs at an all-time high because of the shattering defeat at Agincourt, John's troops set about the task of capturing Paris. On 30 May 1418, he did capture the city, but not before the new Dauphin,