Hitler was never religious! He had a lot of socially conditioned phobias, and a desperate need to blame others for his general lack of success!
Christian principles of turning the other cheek and loving his neighbour, simply didn’t figure in his mental makeup!
However, Religious values never prevented maniacs from misusing religion. We see that clearly in the present day!
“With or without religion, good people can behave well and bad people can do evil; but for good people to do evil – that takes religion.”
– Steven Weinberg