The Spanish expedition to Oran of 1732 or the Spanish conquest of Oran and Mers el-Kebir, took place from 15 June to 2 July 1732, between the Kingdom of Spain against the Ottoman protectorate of Algiers. The great Spanish expedition led by Don José Carrillo de Albornoz, Duke of Montemar and Don Francisco Javier Cornejo defeated the Ottoman-Muslim troops under the command of the Bey Hassan, and conquered the fortress-cities of Oran and Mers el-Kebir, ruled and administered by the Ottoman Empire from 1708, during the War of the Spanish Succession, when both cities, ruled by Spain, fell into the hands of the Ottoman Dey of Algiers.