rebel youth provoked WWI ?

Until 1890, powerful European politicians, e.g. Bismarck, promoted constructive collaboration, between & amongst European states. But, after Bismarck was sacked, European politics rapidly was "railed" onto a track, towards war, in one generation, e.g. Hitler was born, in 1889. I understand, that, militant reactionary groups, e.g. Thule Society, emerged during those decades, spinning 'nationalism' & 'patriotism' into provocations, enflaming antagonisms, and bringing about world-wide war; and that the 'sacred pagan emblems', of those groups, were painted onto war-machines, by soldiers, during the conflict, cp. The Red Baron (film). If so, then perhaps a whole generation of European youth, lacking other leadership, were lured into reactionary groups (which were 'counter-culture', in-so-far as they were often anti-Christian, e.g. 'pagan') ? And, by the mutual antagonisms, that those groups perpetrated upon themselves (taken together), successfully spun 'nationalism' into world-wide war ?

(Tragically, millions of casualties later, liberal groups, offered themselves, as a 'pre-packaged solution', to the problematic quagmire, caused by barbarian Europe's thence-discredited ancien [sic] regimes, stepping into the "settling dust", as the guarantors, of a Permanent Peace, i.e. "modernity", after the thusly-provoked "war to end all wars" allegedly demonstrated a justification, for Perpetual Pacification.)

The provocatory policy, of Germanic expansion, eastward against Slavic peoples, i.e. Drang Nacht Osten (Drawn Nigh Eastward), was publicized, in 1849 AD, immediately after the Europe-wide Communist insurrections of the year before; and was promoted, in 1891 AD, immediately after the ousting, of the pro-Slavic German Chancellor, Otto von Bismarck ("make a good treaty with Russia"). The provocatory 'DNO' policy echoed the medieval Northern Crusades, of the Teutonic Knights, against Baltic & Slavic peoples of north-eastern Europe, in the medieval ages; and ensuing Germanic colonization, of conquered lands, i.e. Ostseidlung (East Settling). The provocatory 'DNO' policy was promoted, by anti-Slavic "hard-liners", in Germany, who promoted the world wars, over Bismarckian cooperation, e.g. Nazis; and by anti-German "hard-liners", amongst the Slavic nations, who promoted the world wars, over Bismarckian cooperation, e.g. Stalinists.

Ultimately, Bismarckian cooperation lost support, amongst both the Germans, and the Slavs, perhaps because Bismarck's "can't we get along" strategy made him seem to be a "softie deep inside"? Tens of mega-deaths & mega-maimings ensued (human-ly "unthinkable", except as a "statistic").