HMS Cossack boards Altmark in Norwegian waters
HMS Cossack entered Jøssingfjord and sent a boarding party onto the German tanker Altmark, freeing 299 British merchant seamen taken by Admiral Graf Spee. Norwegian naval vessels had escorted Altmark through neutral waters while Britain sought the prisoners. The boarding turned Norwegian neutrality into an immediate issue between London, Berlin and Oslo. German planning for Scandinavia was already underway. The incident strengthened Hitler's expectation that British forces would use Norwegian waters when strategic interests demanded it and added urgency to the competition over the coast.
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