User blog comment:Callofduty4/Call of Duty: Ghosts: An early look/@comment-3503432-20130609213829/@comment-24476373-20130617190023

A female lead would make sense here though: with so much of the US's population killed off, the US military would not only be struggling as far as weapons and money but also in manpower. It wouldn't surprise me if women could serve any role in the military if such a situation happened, so as to help boost manpower that would've likely been lost in the mass event.