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Operation Big was an operation of the Alsos Mission, the Allied seizure of facilities, materiel, and personnel related to the German nuclear weapon project during World War II. It was tasked with sweeping several targeted towns in the area of southwest Germany designated to the French First Army, including Hechingen, Bisingen, Haigerloch, and Tailfingen. Operating behind German lines the U.S. task force successfully carried out its mission of seizing or destroying all project related assets and capturing its top scientists in the last week of April and first week of May, 1945. ==History== Shortly after the liberation of Paris it was decided to bomb German nuclear facilities wherever they lay in order to deprive the Soviet Union of their technology and personnel, unless American troops could get to them first.〔(''Die Bombe'', a documentary by Klaus H. Hein ) (c)NDR/arte 1996 (accessed 2014-10-24)〕 Worried that French forces might beat the US to Werner Heisenberg's laboratory in Hechingen, Alsos chief Lt-Col Boris Pash hastily organized a flying column of combat engineers from the 1269th Engineer Combat Battalion, the U.S. Sixth Army Group's T-Force intelligence assault force ("Task Force A"). His team reached Horb three days later and headed for Haigerloch while the French forward troops occupied themselves with looking for members of the Vichy Government twenty miles deeper into Württemberg in the Sigmaringen enclave. Pash and his engineers, accompanied by the Sixth Army Group's Chief of Intelligence, General Eugene Harrison, overran Haigerloch on 23 April 1945.
With engineer help, the scientists spent two days dismantling the equipment.〔 A few drums of heavy water were later found in the laboratory's main chamber and a German scientist told Pash that the reactor's uranium cubes had been concealed beneath hay in a nearby barn. The task force then proceeded to Hechingen where they found and detained Erich Bagge, Carl Friedrich von Weizsäcker, Max von Laue, and Karl Wirtz, then went on to Tailfingen where they arrested Otto Hahn. Heisenberg, who had left Hechingen on 19 April, was captured by Pash and a small force at his home in Urfeld am Walchensee, on 3 May 1945. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Operation Big」の詳細全文を読む スポンサード リンク
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