Hundred Years' War English-occupied Calais. In a campaign reminiscent of Crécy, he found himself outmanoeuvred and low on supplies and had to fight a much larger French army at the Battle of Agincourt, north of the Somme. Despite the problems and having a smaller force, his victory was near-total; the French defeat was catastrophic, costing the lives of many of the Armagnac leaders. About 40% of the French nobility was killed. Henry was apparently concerned that the large number of prisoners taken were a security risk (there were more French prisoners than there were soldiers in the entire English army) and he ordered
Battle of Agincourt that the prisoners (who, in an unusual turn of events, actually outnumbered their captors) would realize their advantage in numbers, rearm themselves with the weapons strewn about the field and overwhelm the exhausted English forces. Contemporary chroniclers did not criticise him for it. In his study of the battle, John Keegan argued that the main aim was not to actually kill the French knights but rather to terrorise them into submission and quell any possibility they might resume the fight, which would probably have caused the uncommitted French reserve forces to join the fray, as well. Such an event would