[wott]

> Fighting for a foreign nation and/or mercenaries is illegal in itself

Nope. It depends on countries (and mood of the year).

Some countries allow to become mercenaries and forbid voluntary fighting for a foreign nation. Some countries allow to voluntary fight for a foreign nation and forbid to become mercenaries. And so on.

France even has the French Foreign Legion...

[lm28469]

> France even has the French Foreign Legion...

Which is... the complete opposite of fighting for a foreign nation since it's part of the French army. You can allow foreigners in your army while at the same time making it illegal for your own citizen to join foreign mercenaries