Operation Catapult was an attack on part of the French fleet at Mers-El- Kebir, on the 3rd of July 1940, during the Second World War. A British force including HMS Hood, HMS Resolution, HMS Valiant, HMS Active and the aircraft carrier Ark Royal attacked after the refusal by the French to agree to British conditions. A number of French ships were seriously damaged and over 1100 French were killed. Research Operation Catapult