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On 7 August 1914, French pilot Corporel Joseph "Sadi" Lecointe of Esc. BL10 took off from Belfort aerodrome with his observer Capitaine Langlois to do a reconnaissance of areas to the northeast. They came under fire from ground units and upon returning to camp discovered that the Capitaine had been wounded in the thigh, thus making him the first casualty of the war in the air.
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