Some of the monasteries as well as unfortified manors were evacuated and the Catholic refugees headed for the city of Pilsen, where they thought that a successful defence could be organised.

On 2 October the Protestant artillery arrived, but the calibre and number of the cannons was small and the bombardment of the city walls brought little effect.

The siege continued, with the Protestants receiving new supplies and recruits on a daily basis, while the defenders lacked food and munitions.

However, soon the Holy Roman Empire, led by Bavaria, gathered enough forces and crossed the border with Bohemia, heading towards Pilsen and Prague.

However, he was abandoned by most of his allies and his armies dispersed in the dense forests between Pilsen and Prague, which resulted in a decisive defeat in the Battle of White Mountain.