After WWII, and observing how it could occur despite the recent occurrence of WWI, it was decided to put extra focus on the horrors of war in Western Europe.

Both on allied as well as axis side, sure, but especially on axis educational systems.

Having grown up in Belgium, I can confirm that the never-ending stream of unprompted details of the horrors of WWI and WWII were not exactly "fun" part of education, but hey at least we haven't been lobbing chemicals at each other for the last ~80 years, so at least it seems to work, here, locally in Western Europe, despite all the side-effects of such an education.

That said, I don't feel confident that any insights that may truly improve education in Western Europe (without losing the pacifying -as in peace generating- benefits somehow) would apply well to educational systems elsewhere, because a large fraction of negative side effects in Western European education stem precisely from the educational pivot after WWII.