We are not allowed to use Spanish units - specifically the Generalissimo Franco - correct? That's an awesome boat
Correct. We "can" use units that represent ships either captured or "what-if-captured" if the card is made for them. For example, Brigman made a card named "Rossbach", which is the "captured" Richelieu. ZH-1 is a card for a captured Dutch destroyer, etc. We can use Finnish units and Romanian units no problem. This should be in the first post for the club, unless in my busyness I forgot to get to it. I'll check.
By the way, "Generalissimo Francisco Franco" represents Spain's discussions to purchase an Improved Littorio, with better deck armor and better AA from the Italians. The deal fell apart and would have been difficult to do anyway.