On the night of April 24, 1915, the Turkish government placed under arrest over 200 Armenian community leaders in Constantinople. Hundreds more were apprehended soon after. They were all sent to prison in the interior of Anatolia, where most were summarily executed. The Young Turk regime had long been planning the Armenian Genocide and reports of atrocities being committed against the Armenians in the eastern war zones had been filtering in during the first months of 1915. The Ministry of War had already acted on the government's plan by disarming the Armenian recruits in the Ottoman Army, reducing them to labor battalions and working them under conditions equaling slavery. The incapacitation and methodic reduction of the Armenian male population, as well as the summary arrest and execution of the Armenian leadership marked the earliest stages of the Armenian Genocide. These acts were committed under the cover of a news blackout on account of the war and the government proceeded to implement its plans to liquidate the Armenian population with secrecy. Therefore, the Young Turks regime's true intentions went undetected until the arrests of April 24. As the persons seized that night included the most prominent public figures of the Armenian community in the capital city of the Ottoman Empire, everyone was alerted about the dimensions of the policies being entertained and implemented by the Turkish government. Their death presaged the murder of an ancient civilization. April 24 is, therefore, commemorated as the date of the unfolding of the Armenian Genocide. It is estimated that one and a half million Armenians perished between 1915 and 1923. There were an estimated two million Armenians living in the Ottoman Empire on the eve of W.W.I. Well over a million were deported in 1915. Hundreds of thousands were butchered outright. Many others died of starvation, exhaustion, and epidemics which ravaged the concentration camps. Among the Armenians living along the periphery of the Ottoman Empire many at first escaped the fate of their countrymen in the central provinces of Turkey. Tens of thousands in the east fled to the Russian border to lead a precarious existence as refugees. The majority of the Armenians in Constantinople, the capital city, were spared deportation. In 1918, however, the Young Turk regime took the war into the Caucasus, where approximately 1,800,000 Armenians lived under Russian dominion. Ottoman forces advancing through East Armenia and Azerbaijan here too engaged in systematic massacres. The expulsions and massacres carried by the Nationalist Turks between 1920 and 1922 added tens of thousands of more victims. By 1923 the entire landmass of Asia Minor and historic West Armenia had been expunged of its Armenian population. The destruction of the Armenian communities in this part of the world was total.