@Drlee
As long as it wouldn't cause the potential to run afoul of U.S. law, after doing a stint in the U.S. Army (I would want to give a few years to my native country first), I wouldn't have mind joining the French Foreign Legion and doing a stint with them as well. However, I also know that you can get into legal trouble free lancing yourself out to foreign countries like that, so that would be a big deterrent for me to join the French Foreign Legion.
I know Americans have joined the French Foreign Legion and serve in it, but, I could see the potential where you could find yourself in legal trouble with your native country in certain situations for doing so. I guess you can't serve two masters. You have to pick one or the other and stick with that one master. In such case, it would be my native government, the U.S. government.
Still, I think the French Foreign Legion is pretty cool. It seems they take some guys with certain criminal offenses (though not all criminal offenses) and give them a clean slate and a new identity. Teach them things like honor, how to be a soldier, follow the rules and selfless service. A chance to redeem themselves. I eat that shit up.
A second chance at life in return for service to the French government.
"I need ammunition, not a ride!" -Volodymyr Zelenskyy