Okay, since we're talking about Lafayette? What about all those other foreign volunteers? Kasimir Pulaski, if he had not been killed in the last month of the war? I understand that he was something of a career military man with just an idealistic idea of freedom, but as a nobleman landowner he could have stuck around as an organizer bureaucrat and slowly worked his way up through the ranks. Then again, if he hadn't heroically died on the last siege of the war, he would probably just faded into nothingness either in the new republic or in his native Poland.
Maybe Baron von Steuben ? he might be interested