You always wondered how your generals are traveling from island to island? This is what happens beyond the scene, when they disappear in your storehouse or Mayor: they gain access to the transportation field, and just have to choose the right teleportation door to the right island / adventure.
As you can see, all doors are identical. Mistaking is easy. That's why your ls general sometimes lands on your own adventure, or your whole invasion army on you ls ;-)
