We are the nation that broke the chains of the proletariat
The spirit of cummunism was the first thing the USSR dropped when Hitler invaded. The initial propaganda was calling on people to fight for communism and the proletariat with absolutely dismal results. They quickly switched to nationalism with "mother russia" as their main motive and saw much better results. Even to this day Russians refer to WW2 not as WW2 but as "Great Patriotic War".
They even rehabilitated the church when it came time to ask people to die for the Greater Good. Turns out despite 20 years of propaganda, people trusted the clergy more than the party. And that's a big L, considering how horrible the Russian clergy is.
Reminder that Mussolini the political chameleon was a socialist and ran socialist anti-war newspapers until he saw workers of various European nationalities prefer to defend their national interest than their class interests. That's when he dropped internationalism and became a nationalist.