Akin in his book 'Show me you are God', correctly attributes the premise of Hitler's National Socialist – Statist fascism, to evolution. Evolutionary dogma was popular, current, accepted and viewed as 'scientific' by 1900 in Germany. Hitler did not invent this dialectical naturalism, nor promote it. Darwinian science-fiction was already accepted by the elite, the university system, the media and most of the masses as a simple, irreducible, natural and obvious 'fact'. Part of Nazi theology was to use this world-view, to promote the 'natural' rise of Hitlerism as not only necessary to 'save' Germany, but dialectically inevitable. The superior German-Aryan race was simply ennobling and furthering evolutionary 'science' and naturalistic 'progress'.

The British atheist historian Arthur Keith commented, ‘The German Führer, as I have consistently maintained, is an evolutionist; he has consciously sought to make the practice of Germany conform to the theory of evolution.’ [Keith, A., Evolution and Ethics, Putnam, NY, USA, p. 230, 1947.]

Even newspapers in 1945 had the common sense to acknowledge the evolutionary rationale of Hitler's fascist cult see Hitler and Evolution

Here are some choice Hitler quotes supporting evolutionary science-fiction, racial 'progress' and natural 'law':

Blood mixture and the result drop in the racial level is the sole cause of the dying out of old cultures; for men do not perish as a result of lost wars, but by the loss of that force of resistance which is continued only in pure blood. All who are not of good race in this world are chaff. 

Mein Kampf (1925-26), American Edition (1943), 296. In William Lawrence Shirer, The Rise and Fall of the Third Reich(1990), 88. 

Science cannot lie, for it’s always striving, according to the momentary state of knowledge, to deduce what is true. When it makes a mistake, it does so in good faith. It's Christianity that's the liar. It’s in perpetual conflict with itself. 

In Adolf Hitler, Hugh Redwald Trevor-Roper, translated by Norman Cameron and R. H. Stevens, '14 October 1941'

Nature knows no political boundaries. She puts living creatures on this globe and watches the free play of forces. She then confers the master's right on her favourite child, the strongest in courage and industry ... The stronger must dominate and not blend with the weaker, thus sacrificing his own greatness. Only the born weakling can view this as cruel. 

Mein Kampf (1925-26), American Edition (1943), 134-5. In William Lawrence Shirer, The Rise and Fall of the Third Reich

When understanding of the universe has become widespread, when the majority of men know that the stars are not sources of light but worlds, perhaps inhabited worlds like ours, then the Christian doctrine will be convicted of absurdity. 

In Adolf Hitler, Hugh Redwald Trevor-Roper, translated by Norman Cameron and R. H. Stevens, '14 October 1941'

Hitler the fascist was not only anti-Christian, he was an atheist-darwinian demon.

In the book 'Evolution's Fatal Fruit, How Darwin's tree of life brought death to millions' we have the following: “It was Darwin’s theory — carried to its logical conclusion — that led to the dead of some 11 million people at the hands of German Nazis. Hitler was a devout evolutionist. He instructed his troops in evolution and had them provided with books by Darwin and Friedrich Nietzsche.” (p. 8) 

The main textbooks of the Nazi education system were drenched in evolutionary cant. Hitler was a fanatical anti-Christian and by 1942 had outlawed the Bible; taken over the Lutheran church, neutered and mangled the confessing Church; and was well on the way to murdering 5 million Catholics. All in the name of science and evolution.