The only Lioré & Olivier LeO H 25 versions produced in quantity were the LeO H-257bis and LeO H-258, which together represented orders for 86 units from the Aéronavale. Entering service in June 1935, they flew neutrality patrols during the Spanish Civil War and some remained in service at the outbreak of the Second World War. These surviving aircraft flew convoy escort and anti-submarine patrols in September 1939 before being used as tactical bombers against land targets during the Blitzkrieg[3], suffering heavy losses. Fifty-three remained on strength with Vichy forces in August 1940, and these were used for secondary roles such as training and target towing until 1944.
