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第二次世界大战期间,由德国、日本和意大利组成的轴心国与英国、美国、法国和苏联等国家组成的同盟国之间展开了激烈的军事斗争,这是人类历史上规模最大的惨烈战争。各国海军基本上都把攻击敌方的舰艇和运输船只作为其潜艇的主要任务,而把从事侦察和监视、输送人员和作战物资、隐蔽渗透等作为潜艇的特种任务。主要参战国美国、英国、苏联、德国、日本、意大利等动员了大约2300多艘潜艇投入战争,共击沉了4800多艘运输船和500多艘舰艇,而这些国家也有1300多艘潜艇在战争中被击毁或沉没。
During the Second World War, the fierce military struggle between the axis nations composed of Germany, Japan and Italy and the allies formed by Britain, the United States, France and the Soviet Union was the fiercest and most tragic war in human history . Basically, all navies of the United States regard attacking enemy ships and transport vessels as the main task of their submarines, and special missions such as reconnaissance and surveillance, transporting personnel and combat supplies, and concealed penetration as submarines. The main participating countries the United States, Britain, the Soviet Union, Germany, Japan, Italy and other mobilized about 2,300 submarines into the war, sinking a total of more than 4,800 ships and more than 500 ships, and these countries also have more than 1,300 submarines in the war Was destroyed or sunk.