Dyle Planとは 意味・読み方・使い方

The Dyle Plan or D Plan was the primary war plan of the French Army to stave off the expected German attack during Fall Gelb. It was conceived by French General Maurice Gamelin in 1940. Named after the Dyle River, which flows from southern Belgium down to Antwerp, the main objective of the plan was to halt the advancing German Army Group B, incorrectly perceived as the strongest, in central Belgium. France had signed a military treaty with Belgium in 1920 so as to streamline communication and fortification efforts in the event of a German attack, but by the 1930s, Belgium had changed its policy to one of strict neutrality, leading to many coordination difficulties.