Re:A couple of card questions
1. Correct. You swap the locations of the pieces.
2. I have got an official reply to this question: you play the card after the first battle.
3. Of course the play may still attack. Note that the card does not require that the swapped Greeks be included in the attacking force. Thus, you can make an attack anywhere. It is debatable whether one can choose a different action altogether. To be fair, in any case the player should not be required to make an attack; he can just call off his turn if he wish. The card is played /before/ an attack, which IMO should include the designation of the attack (which is signified by tossing Greeks into the target space), thus the player is not committed to a specific attack location at that point.