The problem is the valuation and the survey - when he enlists under "French",
he can probably not transfer to "USA" units - which is what he would want.

He would have to start a new carreer under "USA" with the same name -
but how can we add his final results from the Esc. Lafayette or another French
unit, to his new US data?

The only way might be for him, to stay with Esc. Laf. or any other French unit,
and we have him in the survey and chart as "American"- that would be easy.
Same as any Belgian pilot would have to be in a French unit.