Military history of the United Kingdom

The military history of the United Kingdom covers the period from the creation of the united Kingdom of Great Britain, with the political union of England and Scotland in 1707, to the present day.

From the 18th century, with the expansion of the British Empire and the country's industrial strength, Britain's military force became one of the largest and most powerful in the world, particularly that of its navy, with advanced technology and bases across the world. It declined during the 20th century in the wake of two world wars, decolonisation, and the rise of the United States and the USSR as the new superpowers. Britain has been involved in a great many armed conflicts since the union in 1707, on all continents except for Antarctica. Today it still remains a major power with frequent military interventions across the globe since the end of the Cold War in 1990.

The present-day British Armed Forces encompass the Royal Navy, the British Army, and the Royal Air Force.

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