mayhaps your impressions of the swiss is incomplete.
That happy little nation was the one european nation that was able to rid itself of it's king and establish a republic that stuck. It's mercenary army was fearsome 200 years ago, and it's modern national sovreginty never sullied by a succesful invasion.
And it's because Switzerland maintains 100% of it's male population trained and armed, at all times, by law. Every single male of military age is a trained soldier; always on call, he keeps his squad loadout and weapon in his closet at home. He's well versed in modern small unit tactics, guerilla warfare and the mountainous terran he lives in is his expected battlefield. He will be fighting for his home and his family, his town, his prefect and his nation.
He would be a very very dangerous adversary.