Was Joan D'Arc Insane? Joan of Arc, the French heroine and military leader during the Hundred Years' War, has often been subject to scrutiny regarding her mental state. Some historians and scholars suggest that her visions and voices, which she claimed were from saints instructing her to support Charles VII and lead French troops, could indicate a form of mental illness. However, the context of her experiences must be considered. In 15th-century France, mysticism and religious fervor were common