sentences:  This 666 Squadron was a bomber unit founded at the outbreak of World War II, operating Handley Page Hampdens (September 1939 – December 1940), Avro Manchesters (January 1941 – 1942), Avro Lancasters (1942–1944) and Avro Vulcans (1960s – 1982).In the long-running series of 'Biggles' books by W.E.Johns, 666 Squadron, RAF, is the Special Duties squadron led by the eponymous hero James Bigglesworth during World War II.