Happened in a systematic fashion

First, the Armenians in the army were disarmed and killed

Second, the Armenian intellectual and political leaders were rounded up and killed on April 25, 1915

Finally, the remaining Armenians were rounded up from their homes, told they would be relocated, and then marched off to concentration camps in the desert where they would starve and thirst to death in the burning sun

The Armenians lost 300 years of history in the Genocide
Their churches, buildings, libraries, ect. were destroyed, and they were left with nothing but memories.

The Armenians were mistreated in every way possible during the genocide.
The Turks went to the extent of cutting off the hands of children and letting them bleed and yell themselves to death.

They buried children in ditches in the desert

They drove thousands of Armenians in death marches until they dropped dead or were shot

They planned to eliminated the entire Armenian Christian population living in Turkey, they killed about half

My name is Vartan Hartunian and I am the pastor of the First Armenian Church in Belmont, Massachusetts. I am one of a diminishing number of survivors of the Armenian genocide. I was born on February 11, 1915 and the genocide broke out on April 24, 1915.
In 1909 there was a massacre in Adana, and 30,000 Armenians were slaughtered. When World War I broke out, this gave the Young Turks the opportunity to fulfill a Turkish desire that had continued for centuries: to rid Turkey of all Armenians.
Even before I was born, the Turkish mayor of Marash, the city where I was born, called my father to his office and showed him the orders from Constantinople for the extermination of all the Armenian people. And this good mayor, this good Turk, pleaded with my father and said "What shall I do?" and my father told him to stay in office and to help him, his family and his people as much as he could. This good Turk did that, and we know he was later removed from office due to his lack of cooperation with the orders.
When I was born, my father knew that the decree had been given for my death, and for the death of his other children, his wife and for himself. But fortunately, under the mayor's guidance, my mother and I were hidden in a hospital room. I remember being there maybe a whole year, eating dry bread and cheese, and the only dessert I had was a handful of dried cherries. My three sisters were kept safe in the German orphanage and my father was finally deported. My father was in a death march of 12,000 Armenian men, women, and children, and by the time he had played dead and managed to escape to the American College in Aintab, there were less then 1,000 of those 12,000 remaining.
During the genocide, deliberated in the Turkish parliament, where all objections were silenced, 1.5 million Armenian men, women and children were slaughtered in various ways. Some 500,000 died after the armistice and not only from disease, heartbreak and starvation, but because even after the armistice, the troops of Mustafa Kemal, armed by the French and the English, went through Turkey and destroyed towns, cities and the survivors of the genocide.
During 1920, 1921, as a child of 5 to 6, I witnessed an Armenian church in which there were 2,000 Armenian men, women and children taking refuge. The Turks surrounded the church and poured kerosene all around and set the church on fire, ready to shoot anyone who came out of the building.
They came and did the same thing to the church in which our family and hundreds of others had taken refuge. But we found a trench that the French army, during its stay in that area, had dug from that building to another area where the Armenians were defending themselves. That's how we escaped from that second burning church.