Memories were carefully wiped and their progression kept well in check in every SOLDIER, special components and triggers were given from Fort Lullin to ensure this. Thus, in my last post, Mags and Rene briefly spoke over how everything seems too neat and in order, that Mags doubts that the information they have on hand is true. Even they are unaware of their own experimentation and abilities; and they are pretty high up in the military chain as Commanders.
Of course, rumours spread, suspicions naturally arise.
This is also another reason why some players have alluded to peculiar feelings regarding their changes, the voices and such, and some have hinted to warped memories or some such. Each Aeon and ability is manifesting in various forms and stages until we arrive at the pinnacle where the SOLDIERS find out the truth. And then from that point, the real fate of Viera, and they, will be decided.