Also, don't forget that the law in some countries specifically prohibits their members from joining 'a forreign nation's armed forces', so that joining the Forreign legion may actually make you a traitor in your old country.
(This was originally written to stop officers and 'career soldiers' joining up with a possible enemy force and divulging secrets.)

Not that they'll ever get hold of you, but something to remember if you ever want to return.
OK, I need to disable comments on these to (hopefully) force the comments on to the other blog. This is useful information and people should know it :)