Some others had answer, but I still will do.

“I dont see anything christian on the belt buckle, could you please expslain what you are referring to”???? You ask to show the “God with Us” on the Nazi Germany Foot Soldiers buckle. So you see. And 1940’s Germany was Christian so I presume it refers to the Christian version of God.

“but I dont believe in "missing links" mysterious "mother earth creating" life from no life, or a unobserved "big bang" out of thin air etc etc”
The funny thing you and “believers” don’t grasp. You don’t need to believe in it. These are theories, that could be validated or not by daily observations as virus become antibiotic resistant, foxes opening bins and living in herds in town, list is infinite… Me becoming good in shooting on line (I am now on gold in Mass Effect 3 multiplayer…)

“I believe you have you missed point”
Do not worry, I didn’t. I did debate the relativity of Morals as teen-ager in Philosophy Classes, long time ago: As Robert Heinlein said once: “what are the Rights of a Man drowning?” Or Lenin with: “what Freedom for those Who Starve?” Read Emanuel Kant: “Groundwork of the Metaphysic of Morals”. Tough and Hard, but how much delighting. Just the title makes me laugh…

“Pardon my French” I do.

“Most brutal war for 250 years” Don’t forget in your list the French Catholics and Protestants slaughtering each other’s with great enthusiasm (8 wars between 1562 – 1598 with the famous St Barthelemy 23-24 of August 1572 )...

“Even adjusting for changes in population size, atheist regimes are responsible for 100 times more death in one century than Christian rulers inflicted over five centuries” What Atheist Regimes? You decide against all evidence that Hitler was Atheist. Stalin was probably an atheist (even if if was a Seminarist), but he didn’t kill because he was atheist, but for political purpose, not for Atheistic Purpose. Leopold King of Belgium kill around 20-40 million Africans in the then Belgium Congo, not because he was a Catholic but by pure Greed. If we start to put on Christianity all the murders and killing done by Christians Monarchs and Leaders, you will find your statistic largely in the wrong (including famines in India, Ireland, Vietnam etc)
And in term of Genocide, in South America, Christianity has probably the highest grade in successful killing… And this was done on the name and approval of the Christianity “to convert them by Iron and Fire”.