The two years after the conquest of Rhodes were spent by Solyman in organizing his kingdom. His inaction was greatly resented by the Janissaries, who hated their dull life in barracks and longed for war and for loot. They broke out in revolt and pillaged the houses of Ibrahim and other great functionaries. The outbreak was quelled, Solyman killing with his own hand three of the rebels. Their Agha and other leaders were put to death. But Solyman found it expedient to appease the mercenaries by generous presents, and in the next year—mainly at their instigation—embarked on another war. He was urged to invade Hungary by Francis I, King of France, who hoped to create a diversion from the ambitious projects of the Emperor Charles V. This may be considered as the first entry of the Turks into the maze of European politics. Hungary and Bohemia were at that time united under the rule of Louis II, a very young and inexperienced man. In April, 1526, Solyman and his Grand Vizier, Ibrahim, with a hundred thousand men and three hundred guns, marched to Belgrade, and thence invaded Hungary. On August 27th, five months after their departure from Constantinople, they met the Hungarian army at Mohacz, not far from the Danube, and about half-way from Belgrade to Buda, then, as now, the capital of Hungary. The battle was quickly decided. The Ottoman army had the advantage of an overwhelming superiority both of men and guns. The Hungarians were defeated. Their King, eight bishops, a great majority of the Hungarian nobles, and twenty-four thousand men were killed. This decided the fate of Hungary. Before marching onwards, Solyman ordered all the prisoners he had taken—four thousand in number—to be put to death. He reached Buda on September 10th. The city surrendered. Solyman received there the submission of a number of Hungarian nobles who had survived the disaster of Mohacz. At his instance, Count Zapolya, one of the magnates of Hungary and Voivode of Transylvania, was elected by them as King of Hungary in succession to Louis II, who had left no heir. Solyman shortly after this—influenced in part by news of civil disturbance in Asia Minor—left Buda and retreated to the Danube, and thence returned to his capital. The temporary occupation of part of Hungary had been attended with fearful devastation and with great loss of life to its population. It was estimated that two hundred thousand men were massacred. The retreating army carried off an immense booty and drove before them about a hundred thousand captives of both sexes, who were eventually sold as slaves at Constantinople. Garrisons were left by the Turks in some of the frontier fortresses of Hungary.