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The Border Line defenses of Switzerland were constructed in the late 1930s in response to increasing tensions between Switzerland and its neighbors, chiefly the Axis powers of Germany and Italy. The Border Line was planned to slow or hold an invading force at the border. It consisted of a series of bunkers spaced at short intervals along the French, German and Austrian borders from Basel to St. Margrethen. The bunkers were reinforced by larger multi-blockhouse forts at key points. Most of the positions were within two or three kilometers of the frontier. ==Major positions== Major forts on the Border Line included, from west to east: * Fort de Pré-Giroud near Vallorbe on the French border * Fort de Plainbois about west of Basel * Fort Reuenthal about northwest of Zurich * Fort Ebersberg halfway between Schaffhausen and Zurich, where German and Swiss territory interlock with each other * Fort Heldsberg at St. Margrethen on the Austrian border〔Kauffmann, pp. 157-158〕 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「Border Line (Switzerland)」の詳細全文を読む スポンサード リンク
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