AT TEN OCLOCK on the morning of
September 5, 1939, General Halder had a talk with General von Brauchitsch, the Commander in Chief of the German Army, and General von Bock, who led Army Group North. After sizing up the situation as it looked to them at the beginning of the fifth day of the German attack on Poland they agreed, as Halder wrote in his diary, that the enemy is practically beaten.
William L. Shirer, The Rise and Fall of the Third Reich