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Johann Graf Radetzky von Radetz (2 November 1766 – 5 January 1858) was a Czech nobleman and Austrian field marshal. He served as chief of the general staff in the Habsburg monarchy during the later period of the Napoleonic Wars and proved instrumental in the allied victory as one of the primary architects of the Trachenburg Plan and the Leipzig Campaign. Afterwards, he embarked on military reforms of the Austrian army. Wikipedia