Thing about the "Army" in the terms of the Masons.
The Masons was one of the first groups formed in america.
A secret society that almost all people of position was a part of.
So, all the leaders of the "Army" knew about these pre-mudflood buildings and when found, took them over. Because of the occulted knowledge, they knew what they were, and what to do with them.
an interesting thought experiment.
Brings a new light to the term 'free' masonry.
indeed.