From the moment of the first German attack in the north, the air forces of both sides had been deployed in the skies over the northern sector where the main German attack was expected.

At noon on the 13th May, the Luftwaffe suddenly vanished from the skies in the North. Soon the Allies would learn why.

Tag words: Sir Basil Liddell Hart; Colonel Bourguignon; General Gamelin; General André Prételat; General Heinz Guderian; Meuse River; Ardennes; Deuxième Bureau; Panzer Group Kleist; General Francois d'Astier de la Vigerie; Marshal Henri Philippe Petain; World War I; Dyle Line; General Franz Halder; General Charles Huntziger; Generalleutenant Bruno Loerzer; General Sperrle; Rolling Raid;