 At half past 4 in the morning, on 1 September, the German 7th Infantry Division crossed the Polish border in the area of Milówka and started their assault towards the Polish positions.Their orders were to break through the weak Polish defences and outflank the Kraków Army, thus preventing it from withdrawing eastwards.However, the division was stopped by a delaying action of two Polish infantry companies of the reserve National Defence and Border Defence Corps.