My point is slightly off-topic here (inasmuch as it is not directly concerned with a bug report), but this discussion has got me thinking about the whole rear charge issue in the game. I actually think there are too many rear charges in some battles (where the unit hit in the rear automatically suffers cohesion loss) and I also think that the constant search for rear charge opportunities distorts the gameplay in an ahistorical way. For example, battles between two horse armies can quickly degenerate into what really resembles a WW2 aerial dogfight with units trying to get on the tail of their enemies.

So what if we said that that you could only achieve a rear charge (with automatic cohesion loss) if the enemy unit you were attacking was already engaged with another one of your own units to its front? To be hit in the rear then by a second unit would be fairly catastrophic. But an enemy unit standing on its own that was charged in the rear should be able to simply turn and face your charging unit and combat would then be resolved normally. Rear charges (with automatic cohesion loss) would also occur if evading skirmisher units were successfully "hunted down" by pursuing units on the same turn. This would reduce the number of rear charges in some battles considerably.
I realise that this is not something for right now, but it would be interesting to play-test this idea at some point in the future. I think it might make for more realistic gameplay.
