The title is a little abusive, you cannot call a country an "Empire" if it does not have territories outside of its natural borders, obtained through conquest or colonization.

Other than that:

> Every Swiss military member must keep their service rifle and ammunition in their homes. They may be mobilized with 48 hours notice at any time.

This is definitely true, and there are cases now and then or civilians using such guns in family-related crimes. Like homicide.

10% of the total population is I think way below the rate of civilians who can be recruited in the army in case of conflict vs other countries such as Israel, where both men and women are required to go for military service, if I recall correctly. South Korea is also one of the other countries which comes to mind.