The Saxon army was already on its march towards Prague, the imperial garrisons everywhere retired before them. Schloeckenau, Tetschen, Aussig, Leutmeritz, soon fell into the enemy's hands, and every Roman Catholic place was abandoned to plunder. Consternation seized all the Papists of the Empire; and conscious of the outrages which they themselves had committed on the Protestants, they did not venture to abide the vengeful arrival of a Protestant army. All the Roman Catholics, who had anything to lose, fled hastily from the country to the capital, which again they presently abandoned. Prague was unprepared for an attack, and was too weakly garrisoned to sustain a long siege. Too late had the Emperor resolved to despatch Field-Marshal Tiefenbach to the defence of this capital. Before the imperial orders could reach the head-quarters of that general, in Silesia, the Saxons were already close to Prague, the Protestant inhabitants of which showed little zeal, while the weakness of the garrison left no room to hope a long resistance. In this fearful state of embarrassment, the Roman Catholics of Prague looked for security to Wallenstein, who now lived in that city as a private individual. But far from lending his military experience, and the weight of his name, towards its defence, he seized the favourable opportunity to satiate his thirst for revenge. If he did not actually invite the Saxons to Prague, at least his conduct facilitated its capture. Though unprepared, the town might still hold out until succours could arrive; and an imperial colonel, Count Maradas, showed serious intentions of undertaking its defence. But without command and authority, and having no support but his own zeal and courage, he did not dare to venture upon such a step without the advice of a superior. He therefore consulted the Duke of Friedland, whose approbation might supply the want of authority from the Emperor, and to whom the Bohemian generals were referred by an express edict of the court in the last extremity. He, however, artfully excused himself, on the plea of holding no official appointment, and his long retirement from the political world; while he weakened the resolution of the subalterns by the scruples which he suggested, and painted in the strongest colours. At last, to render the consternation general and complete, he quitted the capital with his whole court, however little he had to fear from its capture; and the city was lost, because, by his departure, he showed that he despaired of its safety. His example was followed by all the Roman Catholic nobility, the generals with their troops, the clergy, and all the officers of the crown. All night the people were employed in saving their persons and effects. The roads to Vienna were crowded with fugitives, who scarcely recovered from their consternation till they reached the imperial city. Maradas himself, despairing of the safety of Prague, followed the rest, and led his small detachment to Tabor, where he awaited the event.
Profound silence reigned in Prague, when the Saxons next morning appeared before it; no preparations were made for defence; not a single shot from the walls announced an intention of resistance. On the contrary, a crowd of spectators from the town, allured by curiosity, came flocking round, to behold the foreign army; and the peaceful confidence with which they advanced, resembled a friendly salutation, more than a hostile reception. From the concurrent reports of these people, the Saxons learned that the town had been deserted by the troops, and that the government had fled to Budweiss. This unexpected and inexplicable absence of resistance excited Arnheim's distrust the more, as the speedy approach of the Silesian succours was no secret to him, and as he knew that the Saxon army was too indifferently provided with materials for undertaking a siege, and by far too weak in numbers to attempt to take the place by storm. Apprehensive of stratagem, he redoubled his vigilance; and he continued in this conviction until Wallenstein's house-steward, whom he discovered among the crowd, confirmed to him this intelligence. "The town is ours without a blow!" exclaimed he in astonishment to his officers, and immediately summoned it by a trumpeter.
The citizens of Prague, thus shamefully abandoned by their defenders, had long taken their resolution; all that they had to do was to secure their properties and liberties by an advantageous capitulation. No sooner was the treaty signed by the Saxon general, in his master's name, than the gates were opened, without farther opposition; and upon the 11th of November, 1631, the army made their triumphal entry. The Elector soon after followed in person, to receive the homage of those whom he had newly taken under his protection; for it was only in the character of protector that the three towns of Prague had surrendered to him. Their allegiance to the Austrian monarchy was not to be dissolved by the step they had taken. In proportion as the Papists' apprehensions of reprisals on the part of the Protestants had been exaggerated, so was their surprise great at the moderation of the Elector, and the discipline of his troops. Field-Marshal Arnheim plainly evinced, on this occasion, his respect for Wallenstein. Not content with sparing his estates on his march, he now placed guards over his palace, in Prague, to prevent the plunder of any of his effects. The Roman Catholics of the town were allowed the fullest liberty of conscience; and of all the churches they had wrested from the Protestants, four only were now taken back from them. From this general indulgence, none were excluded but the Jesuits, who were generally considered as the authors of all past grievances, and thus banished the kingdom.
John George belied not the submission and dependence with which the terror of the imperial name inspired him; nor did he indulge at Prague, in a course of conduct which would assuredly have been pursued against himself in Dresden, by imperial generals, such as Tilly or Wallenstein. He carefully distinguished between the enemy with whom he was at war, and the head of the Empire, to whom he owed obedience. He did not venture to touch the household furniture of the latter, while, without scruple, he appropriated and transported to Dresden the cannon of the former. He did not take up his residence in the imperial palace, but the house of Lichtenstein; too modest to use the apartments of one whom he had deprived of a kingdom. Had this trait been related of a great man and a hero, it would irresistibly excite our admiration; but the character of this prince leaves us in doubt whether this moderation ought to be ascribed to a noble self-command, or to the littleness of a weak mind, which even good fortune could not embolden, and liberty itself could not strip of its habituated fetters.