 Complete the following phrase:  The 2nd Earls younger brother, Francis, studied at the University of Olomouc Olmütz in the Imperial Margraviate of Moravia, and served at the court of Emperor Ferdid III as well as under Duke Charles IV of Lorraine, whose most intimate friend he became. He rose to be a Field Marshal in the Habsburg Army, having greatly distinguished himself at the 1683 Battle of Vienna and in the other 