You can't handle the truth?
I had the same question as the original poster after I thoroughly read the manual and the FAQ. Neither clears this up, a clarification should be added to the FAQ. Thanks for the clarification.So, like page 7 of the rules, where it shows the player board, and tells you about all the parts, and then points to the buildings / military on it and states:
"These are the slots available for Building and Military Progress Cards. Each of the slots may be used either for a Building or a Military."