In addition to the above points, the following also happens:
- Unit A moves and expends all movement points.
- Unit B moves over top of unit A, forming an army.
- If Unit B still has movement points, then Unit A is allowed to move additional spaces along with Unit B.
I don't believe that this intended behavior, and that if an army is formed in the above scenario, Unit B should lose the remainder of it's movement points. This brings up another point, in that I wish there were an "add to fleet" button (for lack of a better term) instead of the current auto-join for armies.
