Emphasis has already been given to the vital role that radio played in the technique of the blitzkrieg, but this importance was due entirely to the way in which German commanders were prepared to change plans minute by minute in the face of enemy opposition. It is extremely doubtful if such radio contact would have made much difference to the French or the British Army, which was trained to fight systematic set-piece battles.

— Blitzkrieg by Len Deighton (Page 182)