Operation Aerial was the evacuation of Allied forces and civilians from ports in western France from 15 to 25 June 1940 during the Second World War. The evacuation followed the Allied military collapse in the Battle of France against Nazi Germany. Operation Dynamo, the evacuation from Dunkirk and Operation Cycle, an embarkation from Le Havre, finished on 13 June. British and Allied ships were covered from French bases by five Royal Air Force (RAF) fighter squadrons and assisted by aircraft based in England, to lift British, Polish and Czech troops, civilians and equipment from Atlantic ports, particularly from St Nazaire and Nantes.