This looks like a fascinating book, given the perspective and history of the author. Here is a review where the author then responds. From the review:
“Hinlicky lays special stress on what he calls the ‘modernism’ of the Holocaust’ (108). Hitler fully embraced Darwin’s idea and ‘regarded the Darwinian criticism of the West’s antecedent religious traditions as decisive for their refutation and searched for a new, naturalistic theology guided by the root principle of natural selection, the immanent struggle of life against life’ (109). He summarizes Hitler’s theology in the following way: ‘Hitler’s new theology then would be firmly rational, based on science, with an articulate theological doctrine . . . So Hitler’s theology, divine calling and all, intends to be revolutionary-modern, post-Christian, icily scientific in doctrine’” (109).