in contrast to most of the other states of the confederation of the rhine, saxony had remained loyal to napoleon during the german campaign of 1813. prussia wanted to incorporate the state as a part of prussia. the complete removal of the saxon state was prevented at the congress of vienna by austrian state chancellor metternich, but prussia was able to annex three-fifths of saxony territory. saxony lost, among other things, the wittenberg district, the former duchy of saxony, next to torgau, lower lusatia, half of upper lusatia and all the regions in thuriniga. the king of prussia therefore called himself "duke of saxony".