It is a convenient myth created by atheists and other enemies of Christianity to claim Adolf Hitler was a Christian.
Children can be read a description of Jesus of Nazareth's teachings and Adolph Hitler's crimes and conclude that Adolph Hitler was not a Christian in any sense of the word.
But the "brights", like you, can not do that. Not too freaking bright, eh?
FTR — I’m a Professor of History dw. I’ve spent years studying stuff you’ve never even heard of. The earlier post citing several quotes from Hitler with regard to Christianity are the tip of the iceberg.
It is a convenient lie to blame Christianity for Hitler. Certainly Christianity has its share of scoundrels and pretenders who do evil for the supposed cause of God, but Hitler was neither claimed nor can he be laid at the feet of the Church.