The British government advised the French government that Britain would go ahead with Operation Wilfred (mining the coast of Norway). Diplomatic notes were presented to Norway and Sweden warning of actions to hinder German trade with these countries. The Norwegians were now convinced of an Allied invasion.
The battlecruiser HMS Renown, destroyers HMS Inglefield, Ilex, Imogen, Isis, Greyhound, Glowworm, Hyperion and Hero, and the minelayer HMS Teviotbank left Scapa Flow to mine the Norwegian coast. The British submarine HMS Spearfish left Blyth for the Danish coast.
The Norwegian ambassador in Berlin warned of German plans to invade Denmark and parts of Southern Norway. The British also received intelligence reports that Germany will soon invade Norway, including landings at Narvik.
The mass execution of Polish officer prisoners of war by the Soviets began at Katyn.
Game day 218. Norway
The Norwegians collected one industrial resource point. Fearing an allied attack they moved two infantry divisions towards the west coast, six battalions towards Stavanger and six to the south of Narvik.