Wollin and Usedom; upon his approach, the imperial garrisons abandoned their entrenchments and fled. He advanced rapidly on Stettin, to secure this important place before the appearance of the Imperialists. Bogislaus XIV., Duke of Pomerania, a feeble and superannuated prince, had been long tired out by the outrages committed by the latter within his territories; but too weak to resist, he had contented himself with murmurs. The appearance of his deliverer, instead of animating his courage, increased his fear and anxiety. Severely as his country had suffered from the Imperialists, the risk of incurring the Emperor's vengeance prevented him from declaring openly for the Swedes. Gustavus Adolphus, who was encamped under the walls of the town, summoned the city to receive a Swedish garrison. Bogislaus appeared in person in the camp of Gustavus, to deprecate this condition. 'I come to you,' said Gustavus, 'not as an enemy but a friend. I wage no war against Pomerania, nor against the German empire, but against the enemies of both. In my hands this duchy shall be sacred; and it shall be restored to you at the conclusion of the campaign, by me, with more certainty, than by any other. Look to the traces of the imperial force within your territories, and to mine in Usedom; and decide whether you will have the Emperor or me as your friend. What have you to expect, if the Emperor should make himself master of your capital? Will he deal with you more leniently than I? Or is it your intention to stop my progress? The case is pressing: decide at once, and do not compel me to have recourse to more violent measures.'
The alternative was a painful one. On the one side, the King of Sweden was before his gates with a formidable army; on the other, he saw the inevitable vengeance of the Emperor, and the fearful example of so many German princes, who were now wandering in misery, the victims of that revenge. The more immediate danger decided his resolution. The gates of Stettin were opened to the king; the Swedish troops entered; and the Austrians, who were advancing by rapid marches, anticipated. The capture of this place procured for the king a firm footing in Pomerania, the command of the Oder, and a magazine for his troops. To prevent a charge of treachery, Bogislaus was careful to excuse this step to the Emperor on the plea of necessity; but aware of Ferdinand's implacable disposition, he entered into a close alliance with his new protector. By this league with Pomerania, Gustavus secured a powerful friend in Germany, who covered his rear, and maintained his communication with Sweden.
As Ferdinand was already the aggressor in Prussia, Gustavus Adolphus thought himself absolved from the usual formalities, and commenced hostilities without any declaration of war. To the other European powers, he justified his conduct in a manifesto, in which he detailed the grounds which had led him to take up arms. Meanwhile he continued his progress in Pomerania, while he saw his army daily increasing. The troops which had fought under Mansfeld, Duke Christian of Brunswick, the King of Denmark, and Wallenstein, came in crowds, both officers and soldiers, to join his victorious standard.
At the Imperial court, the invasion of the king of Sweden at first excited far less attention than it merited. The pride of Austria, extravagantly elated by its unheard-of successes, looked down with contempt upon a prince, who, with a handful of men, came from an obscure corner of Europe, and who owed his past successes, as they imagined, entirely to the incapacity of a weak opponent. The depreciatory representation which Wallenstein had artfully given of the Swedish power, increased the Emperor's security; for what had he to fear from an enemy, whom his general undertook to drive with such ease from Germany? Even the rapid progress of Gustavus Adolphus in Pomerania, could not entirely dispel this prejudice, which the mockeries of the courtiers continued to feed. He was called in Vienna the Snow King, whom the cold of the north kept together, but who would infallibly melt as he advanced southward. Even the electors, assembled in Ratisbon, disregarded his representations; and, influenced by an abject complaisance to Ferdinand, refused him even the title of king. But while they mocked him in Ratisbon and Vienna, in Mecklenburg and Pomerania, one strong town after another fell into his hands.
Notwithstanding this contempt, the Emperor thought it proper to offer to adjust his differences with Sweden by negociation, and for that purpose sent plenipotentiaries to Denmark. But their instructions showed how little he was in earnest in these proposals, for he still continued to refuse to Gustavus the title of king. He hoped by this means to throw on the king of Sweden the odium of being the aggressor, and thereby to ensure the support of the States of the empire. The conference at Dantzic proved, as might be expected, fruitless, and the animosity of both parties was increased to its utmost by an intemperate correspondence.
An imperial general, Torquato Conti, who commanded in Pomerania, had, in the mean time, made a vain attempt to wrest Stettin from the Swedes. The Imperialists were driven out from one place after another; Damm, Stargard, Camin, and Wolgast, soon fell into the hands of Gustavus. To revenge himself upon the Duke of Pomerania, the imperial general permitted his troops, upon his retreat, to exercise every barbarity on the unfortunate inhabitants of Pomerania, who had already suffered but too severely from his avarice. On pretence of cutting off the resources of the Swedes, the whole country was laid waste and plundered; and often when the Imperialists were unable any longer to maintain a place, it was laid in ashes, in order to leave the enemy nothing but ruins. But these barbarities only served to place in a more favourable light the opposite conduct of the Swedes, and to win all hearts to their humane monarch. The Swedish soldier paid for all he required; no private property was injured on his march. The Swedes consequently were received with open arms both in town and country, whilst every Imperialist that fell into the hands of the Pomeranian peasantry was ruthlessly murdered. Many Pomeranians entered into the service of Sweden, and the estates of this exhausted country willingly voted the king a contribution of 100,000 florins.
Torquato Conti, who, with all his severity of character, was a consummate general, endeavoured to render Stettin useless to the king of Sweden, as he could not deprive him of it. He entrenched himself upon the Oder, at Gartz, above Stettin, in order, by commanding that river, to cut off the water communication of the town with the rest of Germany. Nothing could induce him to attack the King of Sweden, who was his superior in numbers, while the latter was equally cautious not to storm the strong entrenchments of the Imperialists. Torquato, too deficient in troops and money to act upon the offensive against the king, hoped by this plan of operations to give time for Tilly to hasten to the defence of Pomerania, and then, in conjunction with that general, to attack the Swedes. Seizing the opportunity of the temporary absence of Gustavus, he made a sudden attempt upon Stettin, but the Swedes were not unprepared for him. A vigorous attack of the Imperialists was firmly repulsed, and Torquato was forced to retire with great loss. For this auspicious commencement of the war, however, Gustavus was, it must be owned, as much indebted to his good fortune as to his military talents. The imperial troops in Pomerania had been greatly reduced since Wallenstein's dismissal; moreover, the outrages they had committed were now severely revenged upon them; wasted and exhausted, the country no longer afforded them a subsistence. All discipline was at an end; the orders of the officers were disregarded, while their numbers daily decreased by desertion, and by a general mortality, which the piercing cold of a strange climate had produced among them.
Under these circumstances, the imperial general was anxious to allow his troops the repose of winter quarters, but he had to do with an enemy to whom the climate of Germany had no winter. Gustavus had taken the precaution of providing his soldiers with dresses of sheep-skin, to enable them to keep the field even in the most inclement season. The imperial plenipotentiaries, who came to treat with him for a cessation of hostilities, received this discouraging answer: 'The Swedes are soldiers in winter as well as in summer, and not disposed to oppress the unfortunate peasantry. The Imperialists may act as they think proper, but they need not expect to remain undisturbed.' Torquato Conti soon after resigned a command, in which neither riches nor reputation were to be gained.
In this inequality of the two armies, the advantage was necessarily on the side of the Swedes. The Imperialists were incessantly harassed in their winter quarters; Greifenhagan, an important place upon the Oder, taken by storm, and the towns of Gartz and Piritz were at last abandoned by the enemy. In the whole of Pomerania, Greifswald, Demmin, and Colberg alone remained in their hands, and these the king made great preparations to besiege. The enemy directed their retreat towards Brandenburg, in which much of their artillery and baggage, and many prisoners fell into the hands of the pursuers.
By seizing the passes of Riebnitz and Damgarden, Gustavus had opened a passage into Mecklenburg, whose inhabitants were invited to return to their allegiance under their legitimate sovereigns, and to expel the adherents of Wallenstein. The Imperialists, however, gained the important town of Rostock by stratagem, and thus prevented the farther advance of the king, who was unwilling to divide his forces. The exiled dukes of Mecklenburg had ineffectually employed the princes assembled at Ratisbon to intercede with the Emperor: in vain they had endeavoured to soften Ferdinand, by renouncing the alliance of the king, and every idea of resistance. But, driven to despair by the Emperor's inflexibility, they openly espoused the side of Sweden, and raising troops, gave the command of them to Francis Charles Duke of Saxe-Lauenburg. That general made himself master of several strong places on the Elbe, but lost them afterwards to the Imperial General Pappenheim, who was despatched to oppose him. Soon afterwards, besieged by the latter in the town of Ratzeburg, he was compelled to surrender with all his
