The Altmark Incident (Norwegian: Altmark-affæren; German: Altmark-Zwischenfall) was a naval incident of World War II between British destroyers and the German tanker Altmark, which happened on 16–17 February 1940. It took place in what were, at that time, neutral Norwegian waters. On board the Altmark there were some 300[3] allied prisoners (officially internees), whose ships were sunk by the pocket battleship Graf Spee in the Southern Atlantic Ocean. British naval forces cornered the tanker and later the destroyer Cossack attacked the German ship near the Jøssingfjord and freed all the prisoners, killing eight German seamen and wounding ten others in hand to hand combat, five of them seriously. This was the last recorded occasion in which the Royal Navy used cutlasses whilst boarding a ship, and the subsequent hand to hand combat. A British and a Norwegian sailor were also seriously wounded in the action. Germany claimed that the attack was a grave violation of international law and of Norwegian neutrality.
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