Yes, Nazi soldiers in Germany were doing God’s work when they arrested Jews throughout European nations, put them into concentration camps, and executed them in the Nazi gas chambers.
In the New Testament, God the Father promised to kill Jews (perpetually throughout history) for killing Jesus Christ, God’s Only Begotten Son.
God of the Holy Bible ordered Joshua to order all the believers to commit Genocide against the Canaanites.
This is who God is. God is the same yesterday, today, and tomorrow, because God is outside of time and space.
Is the God of the Old Testament who ordered the believers to commit Genocide as an expression of their faith the same as the God of the New Testament, who promised death for Jews for killing Jesus Christ? You betcha!
Of course, true Christians sing about how Joshua and the believers killed every human being (“Genocide”) in Jerico and praise the name of Jesus Christ for the “mighty work of God.”
So is the Holocaust against Jews who killed Jesus Christ. It was a fulfillment of the prophecy of the New Testament against the Jews.
We celebrate the Genocide of Joshua at the Battle of Jericho! God of the Holy Bible is God who orders Genocides and expects believers to fulfill the genocidal wars that He orders. God Is Who He Is.
If you choose to reject the God of the Holy Bible who orders Genocides, then you can suffer eternal damnation in Hell and experience what God’s eternal hatred against you feels like. It is your choice!