Army of the Holy Roman Empire
The Second Battle of Breitenfeld, also known as the First Battle of Leipzig, took place on 23 October 1642 at Breitenfeld, some north-east of Leipzig, Germany, during the Thirty Years' War. The battle was a decisive victory for the Swedish army under the command of Field Marshal Lennart Torstenson over an Imperial Army of the Holy Roman Empire under the command of Archduke Leopold Wilhelm of Austria and his deputy, Prince-General Ottavio Piccolomini, Duke of Amalfi.