On 24 April 1915, the Ottoman authorities arrested and deported hundreds of Armenian intellectuals and leaders from Constantinople. At the orders of Talaat Pasha, an estimated 800,000 to 1.2 million Armenians were sent on death marches to the Syrian Desert in 1915 and 1916. Driven forward by paramilitary escorts, the deportees were deprived of food and water and subjected to robbery, rape, and massacres. In the Syrian Desert, the survivors were dispersed into concentration camps. In 1916, another wave of massacres was ordered, leaving about 200,000 deportees alive by the end of the year. Around 100,000 to 200,000 Armenian women and children were forcibly converted to Islam and integrated into Muslim households. Massacres and ethnic cleansing of Armenian survivors continued through the Turkish War of Independence after World War I, carried out by Turkish nationalists.