Tuhia he tomokanga mo tenei waahanga - Hei te tuatoru o nga tama a te peka cadet (junior) o te whanau rangatira o Fürstenberg, i whakareri a Karl Aloys mo te mahi hoia. Ko tana kaiwhakaako, ko Lieutenant Ernst, kei te mahi tonu i roto i te ope taua a Habsburg, a ka mau ia ki a Karl Aloys e ono tau te pakeke ki te mahi. I tenei ara, i ako ia i a ia e tamariki ana i te pukapuka hoia a Habsburg, a ka whakapiri atu ki nga hoia nui i whakamua i tana maatauranga me tana mahi; i whiwhi hoki ia i te tohu honore hei "Kreis-Obristen", ko te Koronela o te Porohita Imperial, i te wa e tekau ona tau. I a ia e taiohi ana, i te tau 1776, i tutaki ia ki te minita whawhai o Habsburg a Count Franz Moritz von Lacy me Baron Ernst Gideon von Laudon; i tonoa hoki ia ki te kai ki te Emepara Joseph II. I tiimata tana mahi i te tau 1777 hei "Fähnrich" (tohu) i roto i te whakahaere hoia a Habsburg. I kite ia i tana ratonga mara tuatahi i te Pakanga o te Taura Bavarian
(1777<unk>78), ahakoa kaore ia i uru ki tetahi pakanga.