1. A War Built on Ideology, Not Merely Ambition
What separated this conflict from previous European great-power wars was the ideological motor driving German policy. The Nazi leadership pursued not just territorial expansion but a racial reordering of the continent, in which conquered populations were to be exploited, expelled, or destroyed according to their place in a hierarchy the regime had invented. This transformed occupied territories into laboratories of unprecedented violence and made the war impossible to conclude through the kind of negotiated compromise that had ended earlier conflicts. The war's character was set not only by military strategy but by the worldview of those directing it.
Why it matters: Understanding the ideological dimension explains why the war produced atrocities on a scale that purely strategic accounts cannot account for, and why unconditional surrender rather than armistice became the only acceptable conclusion.