The Siege of Brieg or Siege of Brzeg (11 April – 4 May 1741) resulted in the surrender of the Habsburg Austrian garrison of Brzeg (Brieg) during the War of the Austrian Succession. The Austrians were led by Ottavio Piccolomini d'Aragona and the Prussian besiegers were commanded by King Frederick II. Starting in December 1740, the Prussian army under Frederick II invaded and overran the Habsburg territory of Silesia. Frederick hoped that Austria would accept a diplomatic solution for the loss of its province, but Queen Maria Theresa refused. When the Prussians defeated the Austrian relief army at the Battle of Mollwitz on 10 April 1741, the garrison of Brzeg (Brieg) was doomed. After a few weeks, the Austrian garrison surrendered and was allowed free passage to the fortress of Nysa (Neisse).
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