The Battle of Saint-Denis took place on July 10, 1567, during the French Wars of Religion. It was fought between the forces of the Huguenots, who were French Protestants, and the royal army loyal to King Charles IX. The battle occurred near the town of Saint-Denis, just north of Paris, and was part of the ongoing conflict between Catholics and Protestants in France. The Huguenots aimed to capture Paris and challenge royal authority, but they were ultimately defeated. This battle marked a significant moment in the struggle for power and religious freedom in France, leading to further conflicts in the years that followed.