Each ship takes up a different amount of space (Logistics) in a fleet based on it's ship size. So you can a fleet with a bunch of small ships, but only a couple big ships since they need more "room" in the fleet.
Just had this issue happen again.
Is there anyway to choose which order stacked fleets will defend in? When fleets are stack I can't seem to find the "Pass" button so I have to move them and hope that I do it right so that the fleets are stacked. Am I missing the button? When the confirm battle window comes up I would like to know what is fighting, by either centering on it or by showing in the window what is fighting.
Thanks for the update!
Game crashed after I selected a fleet defending a planet and then clicked on an adjacent enemy fleet. Anyone else have this one?