Jean-Baptiste d'Autriche
In 1806 he is recorded as a member of Graz's militia cavalry and when the militia developed into the Landwehr in 1808 he rose to officer rank, becoming an ensign on 29 March 1809. As a member of the 2nd Graz Landwehr-Battalion and commander of its 6th Company, he fought at the battle of Raab under the command of Archduke John of Austria.