I will push my luck with some other questions:
Situation: France has fallen to Germany
- USA lands on French Morocco
a) There are French Troops there - do the USA place a Roundel and begin collecting income ?
b) There are No troops there - do the USA place a Roundel and begin collecting income ?
Evolving Situation: Later France is liberated so the USA roundel is removed and control / income becomes French again, however there are both British and US troops ( no French troops) in say Southern France at the time of French Liberation.
Next Turn Germany reconquers France
Who gets the control of Southern France which contains both British, and US troops and a French Roundel?