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First World War: The Second Battle of Villers-Bretonneux began, which contained the first instance of tanks fighting against each other.
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World War I
1914–1918 global conflict
World War I or the First World War, also known as the Great War, was a global conflict between two coalitions: the Allies and the Central Powers. Main areas of conflict included Europe and the Middle East, as well as parts of Africa and the Asia-Pacific. There were important…Source: Wikipedia (CC BY-SA)
Second Battle of Villers-Bretonneux
1918 battle of the First World War
The Second Battle of Villers-Bretonneux took place from 24 to 27 April 1918, during the German spring offensive to the east of Amiens. It is notable for being the first occasion on which tanks fought against each other; it was the biggest and most successful tank action of the…Source: Wikipedia (CC BY-SA)
Tank
Tracked heavy armoured fighting vehicle
A tank is an armoured fighting vehicle intended as a primary offensive weapon in front-line ground combat. Tank designs are a balance of heavy firepower, strong armour, and battlefield mobility provided by tracks and a powerful engine; their main armament is often mounted within…Source: Wikipedia (CC BY-SA)