The King of Prussia once more led an army into the field, when, on the death of the Elector of Bavaria, childless, in 1778, Joseph II. of Austria conceived the plan of re-annexing to his own crown, under the plea of various antiquated feudal rights, the greater part of the Bavarian territories. Stimulated quite as much by jealousy of Austria, as by a sense of the injustice of this act, Frederic stood out as the assertor of the liberties of Germany, and proceeding with the utmost politeness from explanation to explanation, he marched an army into Bohemia in July, 1778. The war, however, which was terminated in the following spring by the peace of Teschen, was one of manœuvres, and partial engagements; in which Frederic’s skill in strategy shone with its usual lustre, and success, on the whole, rested with the Prussians. By the terms of the treaty, the Bavarian dominions were secured, nearly entire, to the rightful collateral heirs, whose several claims were settled, while certain minor stipulations were made in favour of Prussia. A few years later, in 1785, Frederic again found occasion to oppose Austria, in defence of the integrity of the Germanic constitution. The Emperor Joseph, in prosecution of his designs on Bavaria, had formed a contract with the reigning elector, to exchange the Austrian provinces in the Netherlands for the Electorate. Dissenting from this arrangement, the heir to the succession entrusted the advocacy of his rights to Frederic, who lost no time in negotiating a confederation among the chief powers of Germany, (known by the name of the Germanic League,) to support the constitution of the empire, and the rights of its several princes. By this timely step Austria was compelled to forego the desired acquisition.