After this victory Selim entered Tabriz, and remained there eight days. It was his wish to winter in Persia and to renew his campaign in the following spring, but his soldiers objected and insisted on being led home. This time Selim found himself unable to refuse. He turned homeward with his army. No terms of peace were concluded with Ismail, and the two countries continued nominally at war during the remainder of Selim’s life. But the great provinces of Diarbekir and Khurdistan remained in the hands of the Turks. Selim left them in charge of the well-known Turkish historian, Idris, who spent the next year in organizing these two departments and in putting down any attempt at resistance. He was eminently successful in this, and the two provinces were permanently annexed to the Ottoman Empire. The whole campaign of Selim must be considered as a most striking success. To have marched a hundred and forty thousand men, with eighty thousand horses and three hundred guns, over twelve hundred miles, and to have defeated a powerful army, backed by all the resources of a great country, was an achievement which earned for Selim a place in the first rank of great generals. Selim does not appear to have been anxious to include Persia in his Empire. His hatred of the Schii heresy was such that he aimed rather at isolation than annexation. He issued a firman forbidding any trade with Persia, and when a number of merchants were reported to him for having broken the law by entering into illicit trade with the Persians, he ordered them to be executed. He was only with difficulty induced to revoke the order by the Mufti Djemali.

On his return to Constantinople Selim, inflamed by his success in putting down the heresy of the Schiis and his victory over heretical Persia, determined to extirpate Christianity from his dominion. Again with the greatest difficulty he was dissuaded from this course by the courageous Mufti. But he insisted on depriving the Christians in Constantinople of all their churches, which he turned into mosques.

In the spring of 1516 Selim determined to extend his Empire by the conquest of Syria and Egypt. These countries had been for many years past under the rule of the Mamelukes, a body of soldiers recruited from Circassian slaves, and from whose ranks Sultans were elected for their lives. The existing Sultan, Kansar Ghowri, was eighty years of age, but was still able to take command in the field of his Mamelukes. The immediate pretext for war, as in the case of Persia, was a religious one. A claim was preferred by Selim for the protection of the holy cities of Mecca and Medina.

On June 26th Selim arrived at Konia, and thence sent an insolent missive of defiance to Ghowri, who was at Aleppo. In return, a mission was sent to the Turkish headquarters. It consisted of an envoy and a suite of ten Mamelukes in splendid military array and glittering with armour. Selim was indignant at this warlike demonstration. He directed the immediate execution of the ten members of the suite, and with difficulty was persuaded not to deal in the same way with the envoy. As an alternative the envoy was shorn of his beard and hair, his head was covered by a nightcap, and he was mounted on a broken-down donkey, and was returned in this ignominious way to Ghowri.

The two armies met in battle not far from Aleppo. The issue was not in doubt. The Egyptians had no guns. They also suffered from the defection of the Djellans, a section of Mamelukes of the second and inferior rank. An hour sufficed to ensure complete victory to the Turks. Ghowri fled and died, trampled to death, it was said, by the mass of fugitives. The victory caused the loss not only of Aleppo but of the whole of Syria. Selim, after a few days at Aleppo, went to Damascus, and there organized the invasion of Egypt. This involved the provision of many thousands of camels to carry water for the troops when crossing the desert. He sent five thousand men to Gaza, under Sinan Pasha, the brave general who had led the victorious wing of his army against the Persians. They met there an Egyptian army of about the same number, and a fierce battle ensued, which resulted in the defeat of the Mamelukes, mainly owing to the Ottoman artillery.

Selim left Damascus with his main army on December 16th. On arrival at Gaza he ordered the immediate slaughter of all its inhabitants. He also directed the execution of one of his own generals who ventured to point out to him the danger of an invasion of Egypt. On January 10th the arrangements for this expedition were complete. Ten days were occupied in crossing the desert between Syria and Egypt. The army was harassed by Arabs, but there was no attempt to resist on the part of the main Egyptian army. When, at one time, the Grand Vizier, thinking that the cloud of Arabs meant a more serious resistance, persuaded Selim to mount his war-horse, the Sultan, on finding it was a false alarm and that it was only an affair with Arabs, directed the execution of the Vizier.

On the last day of the year 1516 Selim arrived with his army within a few miles of Cairo. Meanwhile the Mamelukes had elected Tourman Bey as Sultan to succeed Ghowri. But there was much opposition to this on the part of those who favoured the claim of the son of Ghowri. As a result, there was dissension in the Egyptian army. Two of their leaders, Ghazali Bey and Khair Bey, entered into treasonable relations with Selim. Ghazali persuaded Tourman to send the guns, with which the Egyptian army was now provided, by the ordinary route, and then secretly sent information of this to Selim, who was able to avoid the guns by taking another route.

The two armies met near Ridania. The battle resulted in the complete defeat of the Egyptians, with a loss of twenty-five thousand men, owing to their want of guns. Selim then advanced on Cairo. There was no resistance at first, but later the Mamelukes reoccupied it and made a desperate resistance to the Turkish army. The streets were barricaded and every house was turned into a fortress. Selim spent three days in getting possession of the city. Eight hundred Mamelukes who surrendered on promise of their lives were put to death. A general massacre of the inhabitants then took place, and fifty thousand of them perished by the sword, or were thrown into the flames of the burning houses. As a result of this, and further military operations in the Delta, Egypt was completely subdued. The brave and generous Tourman was taken prisoner and, after denouncing the two traitors in the presence of Selim, was put to death.

Some months were then occupied by Selim in organizing the conquered country. It was not annexed as an integral part of Turkey. The Mamelukes, or rather the section of them who had been unfaithful to their Sultan, and who had survived the general slaughter, were entrusted with the administration of Egypt, subject to the superior control of a pasha appointed by the Turkish government. Ghazali and Khair Bey received the reward of their treason—Ghazali was appointed Governor of Syria and Khair Bey of Egypt. A garrison of five thousand Ottoman soldiers was left at Cairo. The Turkish army insisted on an early return to Constantinople. A war against Moslems, where there was no opportunity of making captives for sale as slaves or for harems, had no charm for them. Selim had once more to give way.