The next fortress to be besieged by Ibrahim Pasha was Güns, in 1532. This was the critical point of Suleiman’s fifth Hungarian campaign. After the sultan alone had reduced some thirteen minor forts, he associated the grand vizir with him in this great siege. The little fortress of Güns was brilliantly defended by Nicholas Juritschitz, who had met Ibrahim in former days when ambassador at the Porte.

On August 9th the grand vizir encamped before Güns, and three days later Suleiman arrived. Many small cannon were used in this siege, the largest sending a ball the size of a goose egg, which was, nevertheless, very effective in destroying the battlements. Besides continual assaults, mines were laid, but it was twelve days before Ibrahim summoned the sturdy Juritschitz to surrender. Even then another assault was necessary, which was at first unsuccessful owing to a very curious event. The old men, women and children within the city, seeing the banners of the janissaries planted on the walls, uttered such piercing cries of fear and horror that the assailants were seized with a panic as at something supernatural, and fled from the spot. But their return was so fierce that a breach was made, and the brave Juritschitz, wounded and helpless, was obliged to accept Ibrahim‘s terms.[178] Using his knowledge of the grand vizir’s nature obtained during his embassy to the Porte, he played on his vanity and obtained very good conditions.[179]] Güns was not pillaged, and only formally capitulated, ten janissaries being allowed to remain an hour in the place in order to erect a Turkish standard. So Juritschitz, writing to Ferdinand exclaims: “God Almighty delivered me and this people from the hand of tyranny, which honor all my life has not deserved.”

The delay and practical defeat sustained at Güns, together with the defeat of another Turkish army which was to enter Austria by the Semmering Pass proved the saving of Vienna. Suleiman had announced that he did not intend to attack Vienna on this campaign; nevertheless his vast preparation and the counter‐preparations of Charles V and of Germany suggested a more ambitious campaign than that which he carried out. In any case Suleiman decided to withdraw, and immediately after investing Gratz, which was well defended, he abandoned the enterprise and returned to the Porte.

When the Sultan made peace with Ferdinand in 1533, and temporarily ceased operations on his northern frontier, he turned his attention to conquests in two other directions, namely to the extension of his sea power, and to the reduction of Persia. The romantic story of the exploits of his great admiral Khaireddin Barbarosa does not come into our field, but the Persian campaign is the next object of our attention.

Ever since Suleiman’s accession to the throne the relations of the Porte with the Shah of Persia had been strained. The only reason that this had not resulted in open war was because Suleiman was more deeply concerned in Hungarian affairs. There was continual fighting on the frontier. When Shah Tahmasp succeeded his father Ismail, he was little inclined to humble himself before the Turkish monarch, so he resented an overbearing and threatening letter from Suleiman. Now seemed a favorable moment to execute the threat of war. The excuse was the betrayal of the Ottomans by the khan of Bitlis, who had gone over to the shah of Persia, while the Persians were irate because the Persian governor of Aserbaijan and Baghdad had joined the Turks and had taken with him the keys of Baghdad. The governor having been assassinated and Baghdad retaken by the Persians, Suleiman determined on immediate war.

Ibrahim, again invested with the office of serasker, was sent to Persia to retake Bitlis and Baghdad. He and his army marched as far as Konia, where he received the head of Sherefbey, after which he advanced to Aleppo to take up his winter quarters.[180] He occupied his leisure during the winter by taking several neighboring fortresses. His next plan was to move on Baghdad, but the defterdar Iskender Chelebi who accompanied the expedition urged an immediate advance to Tebriz, recently abandoned by the shah, arguing that the fall of Tebriz would mean the taking of Baghdad. Ibrahim followed Iskender’s suggestion, and arrived before Tebriz the 13th of July, 1534. Receiving the submission of many fortresses en route, he triumphantly entered the Persian capital. To avert the evils generally incident to a Turkish occupation, he set up a judge at Tebriz, and a strong guard. This was unusual self‐restraint in a Turkish conqueror. At this time he suffered the loss of one of his armies in the defile of Kiseljedagh, but otherwise he met only with victory and submission.

On the 27th of September Suleiman joined the grand vizir at Aoudjan and immediately rewarded him and the other beylerbeys for their successes. The united armies continued their march towards Hamadan. The lateness of the season made the crossing of the mountains very difficult. Many pack animals died and the artillery was mired in the bad roads. In that perilous situation the army was attacked by the enemy and suffered considerable loss in men and supplies.

At last the army reached Baghdad. The governor sent a letter of submission, and then to secure his own safety, fled. The grand vizir immediately took possession of the city, shut the gates to prevent pillage, and sent the keys of the city to Suleiman who had not yet come up. Baghdad was the bulwark of the Persian empire and of great military importance. The army remained there four months while the sultan organized his new conquests. April 2nd, 1535, the Turkish army commenced its return to its capital, making a march of three months to Tebriz and thence of six months to Stambul.

In this campaign Ibrahim had little actual fighting, and slight use for the artillery and mines in which he was so well versed. The success of the campaign was due to the terror excited by the reputation of the Turkish army, and the endurance with which it made terrible marches, equalling the celebrated marches of the generals of antiquity.[181] Ferdinand of Hungary wrote Ibrahim congratulating him on this successful campaign.

This was Ibrahim’s last campaign. His career was cut short at this point. In this Persian expedition the grand vizir had some personal experiences which do not properly belong to an account of his generalship, but rather to the next chapter dealing with his fall.