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First Battle of the Atlantic

Belligerents United Kingdom Canada France United States BrazilOther Allied navies GermanyImperial German NavyCommanders and leadersList of World War I U-boat commandersCasualties and losses4,000 ships8 million tons of shipping178 U-boats5,000 menThe Atlantic U-boat campaign of World War I (sometimes called the "First Battle of the Atlantic", in reference to the World War II campaign of that name) was the prolonged naval conflict between German submarines and the Allied navies in Atlantic waters –the North Sea, the seas around the British Isles, and the coast of France.

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