Arthur Clarke joins Royal Air Force, initially as an aircraft hand radio wireless mechanic/aircraftsman class II.

Clarke is posted to RAF’s No 9 Radio School (Yatesbury) as a radio instructor

Promoted as Flight Lieutenant and is assigned to MIT RadLab's GCA (Ground Controlled Approach) radar, in charge of training programme. Works with American physicist (later Nobel Laureate) Luis Walter Alvarez

As World War II was ending, Arthur Clarke writes a technical paper (his title: ‘The Future of World Communications’) and sends it to Wireless World magazine. They publish it in October 1945 issue as ‘Extra-terrestrial Relays’ – the first to outline the principles of global broadcasting via communication satellites in geostationary orbit

Demobilised from Royal Air Force, Arthur Clarke enrols at King’s College London to read for a degree in physics and mathematics (graduated in 1948 with B.Sc., First Class)

Arthur C Clarke writes his first full length science fiction novel, Prelude to Space while studying for his degree (but it is only published in 1951)

Arthur Clarke takes a job as Assistant Editor at Physics Abstracts while developing his writing career