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 of negotiations with the French. In the ensuing campaign, many soldiers died due to disease and the English numbers dwindled; they tried to withdraw to English-held Calais but found their path blocked by a considerably larger French army. Despite the disadvantage, the following battle ended in an overwhelming tactical victory for the English. King Henry V of England led his troops into battle and participated in hand-to-hand fighting. King Charles VI of France did not command the French army himself, as he suffered from severe psychotic illnesses with moderate mental incapacitation. Instead, the French were commanded by Constable Charles d'Albret