Moreau, probably at the instigation of his wife, returned to Europe and began to negotiate with an old friend from the circle of republican intriguers: the former Jean-Baptiste Bernadotte, now Crown prince Charles John of Sweden (later king Charles XIV of Sweden). Charles John and Tsar Alexander I of Russia were now together with the Prussians and the Austrians leading an army against Napoleon. Moreau, who wished to see Napoleon defeated and a republican government installed, gave advice to the Swedish and Russian leaders about how best to defeat France. Moreau was mortally wounded in the Battle of Dresden on 27 August 1813 while he was talking to Tsar Alexander and died on 2 September in Louny. Earlier, on 17 August 1813, the tsar had demanded the post of supreme commander of the allied armies for himself, with Moreau and Jomini as his deputies, a request that had been resisted with great difficulty by Austrian Foreign Minister Metternich since the post had already been offered and taken by Field Marshal Schwarzenberg. After Moreau was shot down at his side, the tsar observed to Metternich: "God has uttered his judgment. He was of your opinion".