The siege of Breslau was a siege in the Third Silesian War that began on 7 December 1757 and ended on 19 December 1757. After the defeat at Leuthen, the Austrians withdrew into Breslau. The combined Austro-French garrison of approximately 17,000 men, commanded by Lieutenant General Field Marshal Soloman Sprecher von Bernegg, faced a Prussian army commanded by Frederick the Great.