mi·li·tia
1. An army composed of ordinary citizens rather than professional
soldiers.
2. A military force that is not part of a regular army and is
subject to call for service in an emergency.
3. The whole body of physically fit civilians eligible by law for
military service.
Switzerland can't have the largest militia. Moreover, many young
Swiss men today buy their way out of service.
Of the countries you listed Taiwan, Israel, South Korea and Germany
have larger populations than Switzerland and hence larger militias.
US National Guard (Air and Army) well exceeds 200k as well (Army
National Guard alone is 18 Brigages) -- currently on active
mobilization is 155,805 (Iraq, Afghanistan, Stateside duty,etc.).
Singapore's reservists exceed the number quoted above for the Swiss
as well.
