 He led troops during the Napoleonic Wars and was Proprietor (Inhaber) of an Austrian infantry regiment.Born in Buda (Ofen) (in modern-day Budapest, Hungary) in 1737, Davidovich came from a Serb family which had immigrated to the Austrian Empire from the Ottoman Empire at the time of Emperor Leopold I.In 1757, Davidovich joined the Austrian army's "Ferdinand Karl" Infantry Regiment #2.