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When were tanks first used in combat during World War I?
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M1A1 Abrams main battle tanks of the U.S. 1st Armored Division moving across the desert in northern Kuwait during the Persian Gulf War, February 1991.
Tanks were first used in combat during World War I by the British Army on September 15, 1916. While French tanks were developed simultaneously, they did not see action until April 1917.1