German Occupation of the Netherlands Officially Begins

I looked out of the open window, over a large area of Amsterdam, over all the roofs and on to the horizon, which was such a pale blue that it was hard to see the dividing line. As long as this exists, I thought, and I may live to see it, this sunshine, these cloudless skies, while this lasts I cannot be unhappy. ”

— Anne Frank

While the commanders of the remnant of the Dutch troops on South-Beveland refused direct commands by their Dutch superior to threaten the German flank, on 17 May a second, night, attack across the Sloe dam again failed at 03:00. The Germans now demanded the capitulation of the island: when this was refused they carpet bombed Arnemuiden, Flushing and Middelburg, the province's capital city, despite it being a totally undefended city. The heavy bombardments demoralised the, largely French, defenders and the German manged to establish a bridgehead around noon. The few Dutch troops present on Walcheren, about three companies, ceased their resistance. The encroaching Germans in the evening threatened to overrun the French forces having fled into Flushing, but a gallant delaying action by brigade general Marcel Delaurens, in which he was himself killed, allowed most troops to be evacuated over the Western Scheldt.
After North-Beveland had surrendered on 18 May, Zeeuws-Vlaanderen was the last remaining unoccupied Dutch territory of the homeland. All Dutch troops there were on orders of the French withdrawn on 19 May to Ostend in Belgium, as their presence would be demoralising and confusing their own forces. On 27 May all of Zeeuws-Vlaanderen also had been occupied.