I have some difficulty to understand this part of the card: "...Then, you may move one Army from a region containing a Ship to a region free for the purposes of Army movement which also contains a Ship."
I am not sure about this part. My judgment tell me that you move an army to a region where there is no ennemy army(what about allies?).
If I can move an army in a region where i have already some units, can I use all the units to do this part: "You may then move or attack with that army."?
Can someone help me on this dark subject?