After speaking with an FFL Recruiter via telephone (In english with a heavy accent), studying this forum and speaking to people here and speaking with a friend who is an ex-Legionairre this is all you need to know:
1. Get a passport
2. Show up at gate
3. Don't speak of anything negative in your past unless asked directly about a specific incident that they found out about. (They wont.)
4. Keep your mouth shut, leave your ego and attitude at the door, doesn't matter what you did before, you will start from zero and learn it the Legion way.
5. No fighting or you will be kicked out immediately.
6. Get in shape before you get there and bring your A game especially if you are 35 or over. (Like me.)
7. Think long and hard about why you are joining. If you go there just to desert you will be forever marked as a loser if to no one else, you will know you quit. Can you live with that? Go there expecting hell, pain, sweat, blood and tears. But if you make it well, you will be a part of one of the most honorable loyal fierce warrior brotherhoods the world has ever known. The Legion doesnt fight for France or the UN, they fight for each-other.