KnowraUnrestricted submarine warfareLinked fromLinked fromThe 13 pages that link to Unrestricted submarine warfare, each with the reason it gives.All 13Broader topic 1Related 8Narrower topic 1Compared with 3World War IRelated: German submarine attacks helped bring the United States into the war.Erich LudendorffRelated: Ludendorff supported its 1917 resumption despite the risk of bringing the United States into the war.ConvoyRelated: Its adoption made unescorted merchant traffic exceptionally vulnerable.Zimmermann TelegramRelated: Germany’s resumption of this policy risked bringing the United States into the war.Alfred von TirpitzRelated: After leaving office, Tirpitz supported this policy, which helped bring the United States into the war.Karl DönitzRelated: Dönitz's prosecution focused partly on Germany's submarine warfare and its treatment of shipwreck survivors.U-boatRelated: Germany adopted it in both world wars to counter Allied maritime supply.Ernest J. KingRelated: King authorized this policy against Japanese shipping after the United States entered the war.