These screenshots summarize the May II Turn.

German armor sweeps past the weak ad-hoc French defenses and advances towards the Marne.  Also, the German commander turns loose “Ants” to disrupt the Allied rear areas.  To the north, German forces grind up the Dutch and Belgians,  advancing to the Dyle Line.

The Allies rush armored/mechanized units to contain the Ardennes penetration, while withdrawing from the Dyle line, using Belgian forces in support.  The Dutch attempt to consolidate their defense in order to tie down German forces for as long as possible.