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Britain's integrated air defence system in the Second World War (1939-45), known as the Dowding System after the air chief marshal of that name, included code-breakers, radar stations, observers, searchlights, barrage balloons, anti-aircraft...

A group of German generals attempted to assassinate the leader of Nazi Germany Adolf Hitler (1889-1945) using a bomb on 20 July 1944 but failed. The conspirators were against Hitler's conduct of the Second World War (1939-45) and Nazism in...

The British Industrial Revolution (1760-1840) brought innovative mechanisation and deep social change. The process saw the invention of steam-powered machines, which were used in factories in ever-growing urban centres. Agriculture remained...

The electrical telegraph was invented in 1837 by William Fothergill Cook (1806-1879) and Charles Wheatstone (1802-1875) in England with parallel innovations being made by Samuel Morse (1791-1872) in the United States. The telegraph, once...

Francis Bacon (1561-1626) was an English philosopher, statesman, and author. Bacon is often considered one of the founders of modern scientific research and scientific method, even as "the father of modern science" since he proposed a new...

Blitzkrieg ('lightning war') is a military tactic combining air and land forces deployed at speed against the enemy's weaker points while the rear lines are simultaneously disrupted by acts of sabotage and bombing. Speed, concentration, and...

In Greek mythology, Amphitrite is a goddess and the feminine personification of the sea. She is the wife of the Greek sea god, Poseidon, and lives with him in a golden palace beneath the sea. As the daughter of Nereus and Doris, she is one...

The Iranian Revolution (1978-1979) was the social movement that arose from widespread and diverse discontent with the monarchic government of Iran. The revolution was fought against the regime of Mohammad Reza Shah (r. 1941-1979), and it...

The Reichstag fire of 27 February 1933 was a possible arson attack on the German parliament building. The fire was blamed on a communist anarchist Marinus van der Lubbe (1909-1934), but it may have been the work of the Nazi party's paramilitary...

Gold Beach was the central of the five Allied D-Day Normandy landings of 6 June 1944. Primarily British units, with massive naval and air support, were set the task of taking the beach, a feat achieved by the end of the day, using a combination...