Adolf Hitler ordered Rommel to strike Dunkirk(through Belgium)(after toking over Antwerp)... than heading south...
After taking over Dunkirk, Rommel heading to Paris, but rest of Frence was still Frence.(it took 6 montch to capture whole French)....
here a picture of French in 1940


German panzer troops reach
the French coast, June 10, 1940
A photo taken by Rommel
http://www.eyewitnesstohistory.com/francedefeat.htm
Hitler using Para-troopers allot, the same thing happens in Holland too, Dropping Para-troopers in The Heage, Amsterdam, Rotterdam(why?, Amsterdam/Rotterdam are major ports), The Heage to took over the Goverment.
I called a sudden strike... very surprice for the Dutch that dont even have good tanks, only a couple of WWI tanks, and 5 mordern planes, some of them reached England...
Good exsample is renting "Soldaat van Oranje" or "Soldier Of Orange"....
If i was a general, i did the same thing, Coastel/major habours first, the rest come later....
But i am a captain of a Uboot lmao :p