Following the slaughter of WW1 when Trench warfare left civilians relatively safe from violent death, total military dead were an estimated 10 million with about a similar number of civilian dead, all consigned to somewhat irelevance by the Influenza epidemic spread around the globe with possibly 50 million dead.
A reasonably predictable second round more than doubled the Military dead and tripled the civilians wiped from history beginning in the late 1930s with japan going for more land and resources starting with Mongolia

Predictable for the German theatre, well yes even down to the slaughter of the European Jews all to be researched from a casual reading of Mein Kampf and the now widely accepted imposition of reparations under the Versai Treaty.
At least the victors a quarter of a century later had the understanding to accept the “Marshall Plan” to bring economic stability to wartorn Europe in the closing years of the 1940s and early 1950s.

Not perhaps spelt out in his jail time witterings written down by Hess the rise of Adolf Hitler was reasonably spelt out and understood by too few of nations who were obsessively influenced by the ritual slaughter involved in stalemate responses to trench warfare and the machine gun defense.

Mobile war was the next phase and boy did the German generals adapt it successively for first, Poland then Holland, Belgium and much of France until the limitations imposed by numerical strength, the sea and the weather bringing the onset of defeat that began at Stalingrad in January 1943

Now in these “Benign” times if one H Clark is to be believed, Islam has embarked upon their war to end all wars, that until Israel falls will only continue. Just as Mein Kampf outlined much of the thinking of the mediocre Artist, The Quran in combination with the Hamas Charter of 1988 gives a much clearer image of what the mad mullahs and the useful idiots of Islam have as the driver for their current activities.
Hamas undeniably if somewhat idiotically being supported by ignorant masses led by intellectuals world wide do not conceive of what Islam has in store for all who might stand in the way of the Paedophile Prophet’s witterings equally chilling as anything Herr Hitler unleashed.
Did not the Media sanitised acts of depravity from the brief ISIS sponsored killings in Syria beginning just a decade and a half ago with Turkey and Russia supporting a “Free” Syria against ISIS sponsored by Iran not send a clear message
It symbolised the warring between sects of Islam but the truly awful slaughter often by throat slitting continued for years. Yet we see useful idiots all too often based on so called university educated neanderthals similar to the Tea towel bedecked morons calling from the River (Jordan) to the Sea (Mediterranean), Palestine will be free. Probably not though until the internal Islam confusions remain if Israel is vanquished, that alas is but a next step.