Conflicts in 1940

1940 major engagement during the battle of the Netherlands in WWII

1940 WWII: British Army raid on Italian fort in Egypt

operation carried out by British Commandos on Guernsey on 14–15 July 1940

1940 naval battle fought during the Second World War

1940 German naval raid

Polish uprising

1940 battle of the Greco-Italian War

The S-Plan or Sabotage Campaign or England Campaign was a campaign of bombing and sabotage against the civil, economic and military infrastructure of the United Kingdom from 1939 to 1940, conducted by members of the Irish Republican Army (IRA). It was conceived by Seamus O'Donovan in 1938 at the request of then IRA Chief of Staff Seán Russell. Russell and Joseph McGarrity are thought to have formulated the strategy in 1936. During the campaign there were 300 explosions/acts of sabotage, 10 deaths and 96 injuries.

World War II evacuation of British wealth from the United Kingdom to Canada

allied campaign in East Africa during World War II (1940–1941)

1940 battle of the Second Sino-Japanese War