Germany votes to bring in voluntary military service programme for 18-year-olds

I hope German teens are thrilled to fight America's wars

Russia invading Europe would be America's war?

Yes. After all, Europe is under NATO occupation, the same NATO whose leader is no one than America.

Nobody would take seriously the characterization of Europe being under a NATO 'occupation'.

That said, for the first half of my life, much of Europe was under a literal occupation by Russia.

As a reminder: https://en.wikipedia.org/wiki/Berlin_Wall

The Soviet Union rather than Russia. Subtle distinction, but tens of millions of Soviets were not Russian.

Technically true, but 'Russia' works fine, in practice.

Not just technically true, but the reality for vast areas such as the Ukraine and Kazakhstan etc which existed even then. There were numerous cities such as Vilnius or Dushanbe where most of the population did not speak Russian as a first or even native language or consider themselves Russian. It's like when people watch/read "Hunt for Red October" and call Captain Ramius a Russian... He isn't one, and it's a pretty key plot point that he isn't one, hence he defects.