The third son of a cadet branch of the House of Fürstenberg, at his birth his chances of inheriting the family title of "Fürst zu Fürstenberg" were slight; he was prepared instead for a military career, and a tutor was hired to teach him the military sciences. He entered the Habsburg military in 1777, at the age of seventeen years, and was a member of the field army in the short War of the Bavarian Succession (1778–79). His career progressed steadily during the Habsburg War with the Ottoman Empire. In particular he distinguished himself at Šabac in 1790, when he led his troops in storming the fortress on the Sava river.