Forms of war diverging from the standard military norm were not uncommon in the Middle Ages, and notably psychological warfare in which saints and miracles played a major role. This was particularly the case in Brittany, during the War of Succession, when psychological warfare was used to the sole profit of the de Blois-Penthièvre pro-French party. But as soon as hostilities had ended, miracles of the Virgin Mary happened, paving the way for a potencial reconciliation. The dukes of the House of Monfort cleverly used such events topacify their duchy.