To clarify, page 15 says "new Military can replace old Military and Buildings" (got it--red and blue..."so you can...have 3 Military cards at the same time"---Why only 3? There are 5 blue and red spaces on the A-sides of the nation cards?
Thanks--I guess the first paragraph about buildings threw me off. It reads you can have "5 different buildings", which matches the layout. But you're right: it does say clearly that "for example (you can) have 3 Military cards at the same time".