On the 15th of April Buonaparte quitted Paris, for the last time as a permanent abode; on the 16th he was at Mainz, and on the 25th at Erfurt. Before quitting Paris he had appointed Maria Louisa regent in his absence. This he deemed a stroke of policy likely to conciliate the Emperor of Austria. But the Empress's power was merely nominal. She could appear at the Council board, but it was only as the instrument of the Emperor; he carried all active power along with him, and ruled France from his camp. He had still upwards of fifty thousand troops in the garrisons of Prussia, commanded by Eugene, the Viceroy of Italy; and he advanced at the head of three hundred thousand men. Eugene Beauharnais had been compelled necessarily to evacuate Dantzic, Berlin, and Dresden as the Russians and Prussians advanced, and to retreat upon the Elbe. In the month of May Bernadotte, according to concert, crossed over to Stralsund with thirty-five thousand men, and awaited the reinforcements of Russians and Germans which were to raise his division to eighty thousand men, with which he was to co-operate with the Allies, and protect Hamburg. The Allies, under Tetterborn, Czernicheff, and Winzengerode, spread along both sides of the Elbe, the Germans rising enthusiastically wherever they came. Hamburg, Lübeck, and other towns threw open their gates to them. The French general, Morand, endeavouring to quell the rising of the people of Lüneburg, was surprised by the Russians, and his detachment of four thousand men was cut to pieces, or taken prisoners. Eugene marched from Magdeburg to surprise Berlin, but was met at Möckern, defeated, and driven back to Magdeburg. Such was the success of the Allies, and the exulting support of the people, that even Denmark and Saxony began to contemplate going over to the Allies. Blucher entered Dresden on the 27th of March, driving Davoust before him, who blew up an arch of the fine bridge to cover his retreat. The Emperor of Russia and King of Prussia entered the city soon afterwards, and were received by the inhabitants with acclamations. On the 28th of April died the old Russian general, Kutusoff, at Bautzen, and was succeeded by General Wittgenstein.