The Battle of Leuven was a battle of the Ten Days' Campaign during the Belgian Revolution. The battle took place on 12 August and officially ended on 13 August 1831. The Dutch army defeated the Belgian rebels, but were forced to withdraw in order to avoid war with France, as a large French army under Maréchal Gérard had crossed the border to support the Belgian rebels. They concluded a truce with the Belgians, allowing them to take the city for a few hours on 13 August.