Here's what you should know about the French Foreign Legion

Throughout its history, the French Foreign Legion — and the fighters who make up its ranks — were seen as expendable. The foreigners who continue to join do so accepting the possibility of their death in a far-off place in exchange for a new life with some sense of purpose.

Though troops serving the Legion hail from 138 different countries, after serving at least three years honorably, they can apply to be citizens.

But they also have a much quicker path. If they are wounded on the battlefield, they can become citizens through a provision called “Français par le sang versé” (“French by spilled blood”).

You can read more about the French Foreign Legion and the men who choose to fight for France here.