She went on to take towns in the Loire Valley, including Jargeau on 12 June 1429, even though Fastolf had attempted to reinforce with troops and gunpowder weapons. After a result of this string of unexpected sudden defeats, Talbot and Fastolf resolved to confront the French in battle to put an end to their success, thus leading to the Battle of Patay on 18 June 1429. Joan was leading this army and was present in the battle, although how much of a role she had in it is disputed.