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"Little Willie" was the first tank, built in Britain in September 1915 by the Admiralty Landships Committee. This development occurred during World War I due to the stalemate of trench warfare, which rendered armored cars ineffective. The committee, supported by Winston Churchill, experimented with tracked vehicles to overcome difficult terrain and barbed wire. "Little Willie" was followed by "Big Willie," which was accepted by the British Army and led to the production of the Mark I tank. This innovation marked a significant step in military technology, leading to the development and deployment of tanks in combat.1

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