German invasion of the Netherlands
This was deemed too risky by the Dutch government and General Reijnders. The Government wanted the army to resist at the Grebbe Line and Peel Raam Position, and then fall back to the Fortress Holland. Reijnders was not given full military authority in the defence zones. On 5 February 1940 he resigned because of these disagreements with his superiors. He was replaced by General Henry G. Winkelman who decided that in the north the Grebbe Line would be where the battle was to be fought, partly because it would be easier to counterattack.