German invasion of the Netherlands
Therefore, the Belgians decided to withdraw, in an invasion, all their troops to their main defence line, the Albert Canal. This created a gap forty kilometres wide. The French were asked to fill it. Now the French Commander in Chief General Maurice Gamelin was more than interested in including the Dutch in his continuous line. But he would not stretch his supply lines that far unless the Belgians and Dutch would take the allied side. When both nations refused, Gamelin said he would occupy a position near Breda.