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
Battle of Agincourt had originally drawn up a battle plan that had archers and crossbowmen in front of their men-at-arms, with a cavalry force at the rear specifically designed to "fall upon the archers, and use their force to break them," but in the event, the French archers and crossbowmen were deployed "behind" and to the sides of the men-at-arms (where they seem to have played almost no part, except possibly for an initial volley of arrows at the start of the battle). The cavalry force, which could have devastated the English line if it had attacked while they moved their stakes, charged