In 1516, Selim I went on an expedition to Syria and Egypt against the Mamluk Sultanate with his army. The Ottoman army under the command of Selim I won the Battle of Mercidabık on 24 August 1516 against the Mamluk army under the command of the Mamluk ruler Kansu Gavri in Syria, and captured Aleppo, Hama, Homs and Damascus. Then the Lebanese emirs also accepted Ottoman rule. On December 21, 1516, the Ottoman army under the command of Grand Vizier Hadım Sinan Pasha continued on its way by defeating Canberdi Gazali, one of the Mamluk emirs, in the Battle of Khan Yunus. After Selim I captured and visited Jerusalem, the Ottoman army headed towards Gaza.
Tomanbay, who became the head of the Mamluk Sultanate after the Battle of Mercidabık; Not only did he not accept Ottoman rule, he also had the Ottoman ambassador who came for a peace offer killed. Selim I crossed the Sinai Desert with his army and encountered the Mamluk Army in Ridaniye in 13 days (January 3-January 16).
In Ridaniye, the new Mamluk Sultan Tomanbay established a strong defense line by purchasing artillery and weapons from the Venetians. Selim I attacked the Mamluk Army from the south by going around the El-Muqaddam Mountain, and thanks to this maneuver, he stopped the Mamluk Army by neutralizing its fixed cannons.
When the Mamluk Sultan Tomanbay realized that he was about to be slaughtered in the Battle of Ridaniye on January 22, despite the war preparations he made with great efforts, he formed a union with his bravest soldiers and carried out the battle noisily under Ottoman command. He entered the tent of the Grand Vizier, which he thought was Sultan Selim's tent, and Grand Vizier Sinan Pasha was killed. As this assassination pressure did not reach the desired target, Tomanbay withdrew from the battlefield. Thus, the Ridaniye Victory was won on January 22, 1517.
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