Yes and no. People nowadays really don't even remember the end of World War I. Russian troops began shooting their officers and marching back to St. Petersburg and Moscow. Earlier that year were the massive Nivelle mutinies of French enlisted men. There were the German naval mutinies of 1918, followed by a powerful but ultimately failed revolution in Germany by communists (put down by the socialist-run government - echoes of the French communist party ending the 1968 left-communist uprising which caused de Gaulle to flee France). Hungarian workers had an uprising and established a Soviet republic in 1919, which lasted until it was defeated by an invasion by Romania. Italy saw the Biennio Rosso with factory occupations in Turin etc. which were finally ended when Mussolini marched on Rome in 1922. As late as 1976 the Italian communist party was getting over 1/3 of the vote in Italy, with the Socialist party (with a hammer and sickle emblem) getting 9% of the vote, and the left-communist Maoists getting over half a million votes (never mind the non-voting anarchists/autonomists).
Europe mobilized its population twice in the twentieth century. The first time Russia became communist, the second time everything east of Steppin to Trieste became communist. With Europe needing the US with NATO, Marshall plan, Gladio etc. to keep post-WWI western Europe (Spain, Italy and France) from becoming communist. Eventually Europe's capitalists learned going to war with one another's countries didn't help them all that much.