For a non-US example, compare the aftermath of the Franco-Prussian war of 1871/72 and the build-up towards WW I (not exactly 50 years, but also a matter of gene

For a non-US example, compare the aftermath of the Franco-Prussian war of 1871/72 and the build-up towards WW I (not exactly 50 years, but also a matter of generational succession.) However, history also provides some examples, where this "logic" seems to be condensed, e.g., the rise of the Nazis in Germany, where a grand parents' generation sided with the young, often against the middle generation that was much more definied by the war experience – which resulted in the "hickup" of WW II.