I was reading a magazine on WW2 and I did not know that some Americans flew for the RAF during the Battle Of Britain they had to lie and say they were Canadian to join the RAF or get into trouble with the US since we were not in the war yet.On the American Passport of the time it said warns that it is not valid for entering for service in a foreign military force.A real interesting article.One of them was Billy Fiske who won a Olympic gold medal for the USA on the bobsleigh team before the war.he did not survive the Battle of Britain.Here is a link I found about him.To bad from what I read about his skill for learning fast I think he would of became a ace just a shame he did not have the time to learn. http://en.wikipedia.org/wiki/Billy_Fiske And one more link. http://www.fiskes.co.uk/billy_fiske.htm I was reading a magazine on WW2 and I did not know that some Americans flew for the RAF during the Battle Of Britain they had to lie and say they were Canadian to join the RAF or get into trouble with the US since we were not in the war yet.On the American Passport of the time it said warns that it is not valid for entering for service in a foreign military force.A real interesting article.One of them was Billy Fiske who won a Olympic gold medal for the USA on the bobsleigh team before the war.he did not