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Mediterranean U-boat Campaign (World War I) : ウィキペディア英語版 | Mediterranean U-boat Campaign (World War I)
The Mediterranean U-boat Campaign in the Mediterranean Sea was fought by Austria-Hungary and German Empire (with some support by the Ottoman Empire) against the Allies during World War I. It was characterised by the ability of the Central Powers to raid with near impunity during the first years of the war, causing substantial shipping losses, until the introduction of the convoy system allowed the Allies to drastically cut their losses from 1917 on.〔''First World War'' - Willmott, H.P., Dorling Kindersley, 2003, Page 186-187〕 ==History==
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