Enemy combatant is a term referring to a person who, either lawfully or unlawfully, directly engages in hostilities for an enemy state or non-state actor in an armed conflict
C, Charles de Gaulle was not part of the big three. Poor fella kinda got left out lol. Hope this helps :)
C due to the fact that they needed to do that
The best answer here would be C.
I believe a majority of major battles happened in these places because the British had control of them at some point. New York also served as the British base of operations so they probably wanted to break Britain's hold on these cities.