Every SOLDIER can channel powers from their Aeon. The abilities and Limit Breaks are examples of that.
SOLDIERS are unaware of what the Aeons [i]are[/i] and how they have come to be into their beings [the memory alterations and experiments and such]. To the SOLDIERS - voices, powers, the events that Evangeline is referring to - are some queer phenomenon without explanation. But in reality, it the fracturing of psyches as the SOLDIERS gain experience in their trials and discover what makes them the way they are.