In March 1940, with Europe at war, French army lieutenant Henri-Georges Doll came to the U.S. embassy in Paris to give a deposition. Doll was an artillery commander, a graduate of France'sgrandes coles of science, engineering, and service. He had been mobilized to the front at the start of the war, then quickly recalled to Paris to work on a secret device for detecting the deadly land mines being planted by the German army on a vast new scale...
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Biographical Biographies Biographies & History Biography & History Engineering Technology