連合諸国を震え上がらせたドイツの潜水艦「Uボート」に広がる兵士達の日常とは？【歴史解説】

Incidentally, the first submarines were developed around the time of the American Revolutionary War, nearly 140 years before the U-boat. https://ja.wikipedia.org/wiki/Submari... ↓We also recommend these videos! ↓ The lives of medieval European aristocrats were far from ideal. What was their reality?    • 中世ヨーロッパの貴族はどのような生活を送っていたのか？   [Shocking] Do you know the truth about slavery in medieval Europe?    • 【衝撃】中世ヨーロッパに実在した奴隷の真実をご存知ですか？   This channel focuses on "World History Not Taught in Textbooks," and explains some slightly obscure historical topics. If you enjoyed the video, please subscribe. ↓Reference materials for this issue↓ ・Ernst Hasshagen, "U-Boat, Westward! Our Patrols Against Britain, 1914-1918" ・Erudition Club, "Submarines: Surprising Stories No One Knows About: From Their Combat Capabilities to the Latest Mechanisms and Life on Board" ・uboat.net https://uboat.net/ ・OCEAN EXPLORATION, "U-576: Life and Death on a World War II German U-boat" https://oceanexplorer.noaa.gov/explor...