On this day;
On 10 May 1940, Nazi Germany invaded the Netherlands. Queen Wilhelmina had wanted to stay in the Netherlands: she had planned to go to the southern province of Zeeland with her troops in order to coordinate further resistance from the town of Breskens and remain there until help arrived, much as King Albert I of Belgium had done during World War I. She fled The Hague, and she boarded HMS Hereward, a British destroyer which was to take her south; however, after she was aboard, Zeeland came under heavy attack from the Luftwaffe and it was considered too dangerous to return. Wilhelmina was then left with no option but to accept George VI's offer of refuge. She retreated to Britain, planning to return as soon as possible.
Germans occupy Brussels
On the Western Front... Troops of the German 6th Army (Reichenau) enter Brussels. Antwerp and the islands at the mouth of the Scheldt are also being abandoned but have not yet been taken by the Germans. The British and French forces in Belgium have now fallen back to the Dendre River. General Gort is now worried by the growing threat to his right flank and rear areas and, therefore, forms a scratch force to defend this area. General Mason-Macfarlane is put in command. [He has up till now been Gort's Chief of Intelligence. Gort can be criticized for weakening this important department at such a vital stage.] In the main German attacks Guderian's forces, exploiting the loophole in their orders allowing reconnaissance in force, reach the Oise River south of Guise. On the German left flank, the French 4th Armored Division (Colonel de Gaulle) attacks northward from around Laon. The Luftwaffe attacks them fiercely and prevents any real gains.
In Belgium... The government has moved to Ostend.
In Norway... The British cruiser Effingham goes aground and is lost while carrying men and stores to join the forces south of Narvik.