the Schmalkaldic League was split into two parties pledged to take opposite sides in that all-important question; and the anger of German historians at this "treason" of Philip of Hesse is due not merely to its disastrous effect on Protestantism, but to the fact that it materially contributed to the conquest of Gelders by Charles and to its eventual separation from the Empire. But for Philip of Hesse's bigamy Gelders might to-day be part of Germany and not of Holland.
The pressure of other dangers, however, gave Gelders a two years' respite. The Emperor hurried from the Diet of Ratisbon to attempt the conquest of Algiers, a nest of pirates which was a perpetual menace to his Spanish and Italian possessions; and the disastrous failure of that expedition encouraged Francis I and Solyman to renew their war on the Habsburgs. Zapolya had died on July 23, 1540, but before his death he had been unexpectedly blessed with a son, John Sigismund. His widow and her minister George Martinuzzi, Bishop of Grosswardein, thereupon repudiated the treaty of Grosswardein (1538), by which Ferdinand was to succeed Zapolya, and crowned the infant John Sigismund. Their only hope lay in Solyman, and the Turk had determined to end the nominal independence which Hungary enjoyed under Zapolya. In August, 1541, he captured Buda, turned its church of St Mary into a mosque, and Hungary into a Turkish province. The Diet of Speier (January, 1542) offered substantial levies for the war, but they were ill-equipped and worse commanded by Joachim of Brandenburg. In September the army sat down before Pesth; on the 5th a breach was made, but the storming party failed; and afterwards, wrote Sir Thomas Seymour, who was present, "the soldiers for lack of wages refused to keep watch and ward or to make assault." Two days later the siege was raised; Joachim and his troops returned in disgrace to Germany; and next year Solyman extended his sway over Fünfkirchen, Stuhlweissenburg, and Gran.
Misfortune attended the Emperor in the west as well as in the east. Cleves had definitely thrown in its lot with France, and the anti-imperial league was joined by Sweden, Denmark, and Scotland. The French alliance with Turkey was once more brought into play, the Pope was hostile to both the Habsburg brothers, and Henry VIII was still haggling over the price of his friendship. Francis I declared war in 1542; and, although, he failed before Perpignan, a Danish-Clevish army under Martin van Rossem defeated the imperialists at Sittard (March 24, 1543), Luxemburg was overrun, and a Franco-Turkish fleet captured Nice.
The Lutheran Princes meanwhile were making the best of their opportunities. In 1541 the Erasmian Pflug was elected Bishop of Naumburg, but John Frederick feared he would join the Nürnberg League; and in spite of Luther's warnings against the violence of his action he forced Amsdorf into the see. Pflug's cause was adopted by
