The armistice was, meanwhile, still more beneficial to the allies. The Russians had time to concentrate their scattered troops, the Prussians completed the equipment of their numerous _Landwehren_, and the Swedes also took the field. Bernadotte landed on the 18th of May in Pomerania, and advanced with his troops into Brandenburg for the purpose, in conjunction with Bulow, of covering Berlin. A German auxiliary corps, in the pay of England, was also formed, under Wallmoden, on the Baltic. The defence of Hamburg was extremely easy; but the base intrigues of foreigners, who, as during the time of the thirty years' war, paid themselves for their aid by the seizure of German provinces and towns, delivered that splendid city into the hands of the French. Bernadotte had sold himself to Russia for the price of Norway, which Denmark refused to cede unless Hamburg and Lubeck were given in exchange. This agreement had already been made by Prince Dolgorucki in the name of the emperor Alexander, and Tettenborn yielded Hamburg to the Danes, who marched in under pretext of protecting the city and were received with delight by the unsuspecting citizens. The non-advance of the Swedes proceeded from the same cause. The increase of the Danish marine by means of the Hanse towns, however, proved displeasing to England; the whole of the commerce was broken up, and the Danes, hastily resolving to maintain faith with Napoleon, delivered luckless Hamburg to the French, who instantly took a most terrible revenge. Davoust, as he himself boasted, merely sent twelve German patriots to execution,[14] but expelled twenty-five thousand of the inhabitants from the city, while he pulled down their houses and converted them into fortifications, at which the principal citizens were compelled to work in person. Dissatisfied, moreover, with a contribution of eighteen millions, he robbed the great Hamburg bank, treading underfoot every private and national right, all, as he, miserable slave as he was,[15] declared, in obedience to the mandate of his lord.