A cursory overview of the period of European history from before WWI to the end of WWII.
It certainly has a narrative and is clearly the author's own view, although it never pretends to be otherwise. Like other reviewers had said, it's best read when one already has a familiarity with the time period, as this is really just a narrative written on top.
Books referencing this one already highlighted the most useful information for me, such as the fact that before WWI free travel had been a thing.
Additional useful information was how new art caused a lot of rioting.
The biggest takeaway was how popular both these wars were, how popular Hitler's dictatorship was and how little resistance there was to it internally (and even those mainly concerned that Hitler might lose), and consequently how these wars were fought for mastery and total victory, with men gleefully throwing themselves into the grinder, a far cry from the wars of old fought by volunteer professionals for specific material goals.
Democratic thinking led to wars not being merely the private affairs of rulers, like Taylor says it made people full members of a community at war. This led to wonderful things like the British campaign of indiscriminate bombing of civilian houses, it being declared that free enterprise during wartime "doesn't work" which led to central planning of economies. This is of course in addition to the German atrocities.
The intellectual class were much more enamored with Communism than the workers, whose strikes and general resistance (as well as that of the army) was over bad pay, bad conditions, or in case of army mutinies, bad leadership.
Resistance to war was the business of a minority of (mostly Leftist) intellectuals, whose secret meetings were regularly broken up by the police. The wars generally received overwhelming enthusiasm.
Nationalism also recoiled on the Germans, against whom forced resettlement and other atrocities were committed as well, which Taylor says is Nationalism carried to its logical conclusion.
Another interesting detail is the "Weight of Metal" way that WWI was conducted: Generals were experienced in efficiently planning railway timetables and transporting men and weapons to the front lines. The doctrine of the day was to fling as many of them at the enemy as possible, and when that didn't work, throw even more men at it. It speaks to the inhumanity of the era, and while this was improved on on the Western Front, the Eastern front in WWII was fought in a similar manner.
Another interesting bit is both wars were extended and possibly made worse by US interference. While Allied leaders during WWI were reluctantly considering peace, this was thrown in the garbage when the US promised support and involvement, and this encouraged Allied powers to behave recklessly. In WWII they similarly relied on US support when it was promised and this changed their behavior significantly.
The way Woodrow Wilson dragged his "reasonable and peaceful" supporters into total war in Europe just as his aspirations to mediation might have borne fruit was also an interesting thing that I was glad was expanded on.
Soviet History - most interesting to me was how when Stalin decided on his "communism in one nation" idea, the international went from trying to spark revolutions to preventing them, until Stalin ordered its dissolution in 1943.
There are probably many more interesting pieces of information here, and very information dense as evidenced by the density of my notes, which is impressive for such a short book. Definitely an efficient read.