The Year of '40

The years aircraft: The de Havilland Mosquito

March 19–20 (overnight) – Royal Air Force Bomber Command conducts its first attack of World War II against a land target, when 20 Hampdens and 30 Whitleys strike the German seaplane base at Hörnum on the island of Sylt. One Whitley is lost

June 15–18 – Royal Air Force fighter cover allows the evacuation by sea from France to the United Kingdom of 52,104 troops from Cherbourg and St. Malo, France, without loss