1. You are correct. The first card's power would not activate. The second card would use the icon on the first card to activate its power. "Teams of Three" would use the icons on the first two cards to activate its power.
2. There are some events that will add other types of cards into the barracks deck.
Thanks, I just saw the FAQ blog posting where they addressed this card, I should have searched more thorough, but I appreciate the response. Now I feel like I understand it better with reading that and you backing it up.