Joan of Arc had a profound impact on French nationalism during the Hundred Years' War by leading French troops to key victories, notably at Orléans. Her unwavering faith and leadership galvanized the French people, transforming her into a symbol of national pride and unity. Following her execution, she became a martyr and a national hero, inspiring future generations. This sense of identity played a crucial role in shaping a unified French nation, fostering the idea of a collective French spirit. Her legacy continues to inspire patriotism in France to this day.