That’s inaccurate. Amongst NATO countries, Denmark, Estonia, Finland, Greece, Latvia, Lithuania, Norway, Sweden and Turkey have mandatory military service, and Croatia is bringing it back. There’s also non-NATO countries like Austria, Belarus, Cyprus, and Switzerland with mandatory military service.
Of those countries, Belarus, Estonia, Finland, Latvia, and Lithuania all have borders with Russia. The remainder - the majority of both the NATO countries and of the European states with service generally - do not have a border with Russia.