strong places in the
Duchy of Mecklenburg which still sighed under the yoke of the
Imperialists, were recovered by their legitimate sovereign, the Duke
John Albert, under the Swedish general, Achatius Tott. In vain did the
imperial general, Wolf Count von Mansfeld, endeavour to recover from the
Swedes the territories of Halberstadt, of which they had taken
possession immediately upon the victory of Leipzig; he was even
compelled to leave Magdeburg itself in their hands. The Swedish
general, Banner, who with 8,000 men remained upon the Elbe, closely
blockaded that city, and had defeated several imperial regiments which
had been sent to its relief. Count Mansfeld defended it in person with
great resolution; but his garrison being too weak to oppose for any
length of time the numerous force of the besiegers, he was already about
to surrender on conditions, when Pappenheim advanced to his assistance,
and gave employment elsewhere to the Swedish arms. Magdeburg, however,
or rather the wretched huts that peeped out miserably from among the
ruins of that once great town, was afterwards voluntarily abandoned by
the Imperialists, and immediately taken possession of by the Swedes.

Even Lower Saxony, encouraged by the progress of the king, ventured to
raise its head from the disasters of the unfortunate Danish war. They
held a congress at Hamburg, and resolved upon raising three regiments,
which they hoped would be sufficient to free them from the oppressive
garrisons of the Imperialists. The Bishop of Bremen, a relation of
Gustavus Adolphus, was not content even with this; but assembled troops
of his own, and terrified the unfortunate monks and priests of the
neighbourhood, but was quickly compelled by the imperial general, Count
Gronsfeld, to lay down his arms. Even George, Duke of Lunenburg,
formerly a colonel in the Emperor's service, embraced the party of
Gustavus, for whom he raised several regiments, and by occupying the
attention of the Imperialists in Lower Saxony, materially assisted him.

But more important service was rendered to the king by the Landgrave
William of Hesse Cassel, whose victorious arms struck with terror the
greater part of Westphalia and Lower Saxony, the bishopric of Fulda, and
even the Electorate of Cologne. It has been already stated that
immediately after the conclusion of the alliance between the Landgrave
and Gustavus Adolphus at Werben, two imperial generals, Fugger and
Altringer, were ordere