Armenia was a local issue. The holocaust was Eurasian and started well before WWII.
It was a great wave of ethnic cleansing. Stalin was doing it before the Nazis took power. The capital of Moldova was majority Jewish, then Jew Free, and the Germans never got there. Ukraine killed Jews and Poles along their border. The Roma were all over Europe, but are never heard about in Russia, Ukraine, because they were killed.
Islamic people were sent to Siberia, most did not live.
Germans came late to the game. But being Germans they built factories, transport, kept records. Donations flowed in from all over Europe.
Once it got started, everybody had at least some door to door Jehovah's Witnesses, Seventh Day Adventists, minor but persistent criminals, village idiots, witches, to donate to the cause.
It was not just the British and French spy networks running through Jews, Homosexuals, and Missionaries.
It was not just the Germans. It started before the war.
From the Atlantic to the Urals, it was mass slaughter of the different.
Volga Germans and Prussians were being slaughtered, by Slavs.
Ukrainians were killing Russians, Poles, Jews, Roma. Stalin caused a famine to slow them down.
When the German army went east it was into the lands they had lost in WWI, that had a German population, now missing. Those that had killed them and taken their farms were exterminated.
When the Red Army advanced through Ukraine, they killed the Ukrainians, before they reached the Germans. After the war, Bandera Ukraine's were still killing Russians. They fought on till 1950.
Holocaust, Genocide, are words to small to describe what went on between the wars.
The Great Eurasian Murderfest!