first serious Ottoman attack in 1455. The navy under the command of Hamza Bey attacked the island, besieged and destroyed the Andimacheia Castle. The last Hospitaller governor of the island was Piero de Ponte. Ottoman Era During the conquest of Rhodes in 1522, it was surrendered to the Ottomans due to the terms of the agreement. When Captain Behram Bey arrived in front of Kos and Bodrum, the castle guards handed over the castle to him and left, and this news reached the camp on 17 Safer 929 (5 January 1523). As soon as the island was taken, a qadi, a castellan and guards were sent to the largest and fortified castle, to Nerantzia, which was repaired, the Greek Orthodox people of the island were left in their places and their residence was provided in the suburbs outside the castle. During the course of the Orlov revolt, a Russian fleet anchored off the Kos castle. On the night of 5 August 1773, the Russians dispatched a landing party intending to capture the castle. They suffered heavy casualties in the ensuing battle and the Russian ships departed Kos two days later, having failed to achieve their objective. According to the Ottoman General Census of 1881/82–1893, the kaza of had a total population of 12,965, consisting of 10,459 Greeks, 2,439 Muslims and 67 Jews.The island was occupied by the Kingdom of Italy on May 20, 1912. Italian Rule Kos was transferred to the Kingdom of Italy in 1912 after the Italo-Turkish War. The Italians developed the infrastructures of the island, after the ruinous earthquake of 23 April 1933, which destroyed a great part of the old city and damaged many new buildings. Architect Rodolfo Petracco drew up the new city plan, transforming the old quarters into an archaeological park, and dividing the new city into a residential, an administrative, and a commercial area., In World War II, the island, as Italian possession, was part of the Axis. It was controlled by Italian troops until the Italian surrender in 1943. On that occasion, 100 Italian officers who had refused to join the Germans were executed in what became known as the Massacre of Kos. British and German forces then clashed for control of the island in the Battle of Kos as part of the Dodecanese Campaign, in which the Germans were victorious. German troops occupied the island until 1945, when it became a