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World War I: The first tank prototype, developed by William Foster & Co. for the British army, was completed and given its first test drive.

Historical image related to World War I: The first tank prototype, developed by William Foster & Co. for the British army, was completed and given its first test drive. from September 6, 1915

British heavy tanks of the First World War

Type of combat tank

British heavy tanks were a series of related armoured fighting vehicles developed by the UK during the First World War. The Mark I was the world's first tank, a tracked, armed, and armoured vehicle, to enter combat. The name "tank" was initially a code name to maintain secrecy…
Source: Wikipedia (CC BY-SA)

William Foster & Co.

Former English agricultural machinery company

William Foster & Co Ltd was an agricultural machinery company based in Lincoln, Lincolnshire, England often called "Fosters of Lincoln." The company can be traced back to 1846, when William Foster purchased a flour mill in Lincoln. William Foster then proceeded to start small…
Source: Wikipedia (CC BY-SA)

September 6

Day of the year

September 6 is the 249th day of the year in the Gregorian calendar; 116 days remain until the end of the year.
Source: Wikipedia (CC BY-SA)