Since this game came out crossings in battles have been a mystery. I have completely given up on trying to figure out when my army or an enemy army will get a crossing modifier. And that's terrible because they can easily mean victory or defeat. I don't see why each province can't have an indicator like in CK2 of which provinces it's connected to have a crossing.
Not only do we need to know where the crossings occur, but the mechanic itself needs some work. As I pointed out in a previous thread there is a bug or design flaw in the mechanic. Force A is in a battle in which there is no crossing modifier. The battle is going well. Then an ally arrives to help Force A, but they cross a crossing. The battle screen then shows a -1 or -2 crossing modifier for the whole allied force. Force A ends up losing the battle because his ally arrived to help him, but brought a -1 or -2 crossing modifier with him. Logically this makes no sense and is extremely annoying. The crossing modifier should obviously only apply to the force that does the crossing otherwise they are just screwing you over.
Not only do we need to know where the crossings occur, but the mechanic itself needs some work. As I pointed out in a previous thread there is a bug or design flaw in the mechanic. Force A is in a battle in which there is no crossing modifier. The battle is going well. Then an ally arrives to help Force A, but they cross a crossing. The battle screen then shows a -1 or -2 crossing modifier for the whole allied force. Force A ends up losing the battle because his ally arrived to help him, but brought a -1 or -2 crossing modifier with him. Logically this makes no sense and is extremely annoying. The crossing modifier should obviously only apply to the force that does the crossing otherwise they are just screwing you over.