Yep.
Switzerland is a good model for an armed citizenry/militia, but HEAVY WEAPONS make the difference.
If a division of armor could operate in Switzerland, game over.
Rifles are often severly underestimated as a mainstay of national defense, scoffed at as little better than personal defense. But the dirty truth is, that tanks have to refuel and rearm. They need infantry along to not be at the mercy of infantry.
Think of our armored forces,, and think of the extreme difficulty we had for several years in iraq against AK’s and RPGs. Then imagine those guys were shooting like Swiss riflemen.
If Switzerland was as flat as Ukraine, the Nazis would have still stayed away.