The invasion of France, Belgium and the Netherlands “Case Yellow” is set for November 12. Commander-in-Chief, General von Brauchitsch, warns Hitler that the Army is unprepared for an immediate invasion and also reminds him of the risks of a Winter campaign. In addition, von Brauchitsch asks Hitler to allow Oberkommando des Heeres (OKH) to supervise military operations without interference. Hitler loses his temper, asserts that the General Staff are disloyal and cowards, and insists the attack goes ahead.
Colonel Hans Oster of German military intelligence (Abwehr) learns of the plans. He informs his friend Colonel Bert Sas, the Dutch military attaché in Berlin, of the exact date of the planed invasion of the Netherlands. He will do this more than twenty times as the invasion is repeatedly delayed and rescheduled.