[Ironhawk]

Well, units dont ignore thier orders, such as it is. They all try to carry out thier orders to the best of thier ability but there are other complicating factors which make them stray. With Attack Rearmost in particular, there is some kind of hidden check every time a group with this command passes an enemy group in the field. If you succeed in this check, you will move to the next group, etc, until you reach the end. I think it may have something to do with morale? But Im not really sure. Probably the command would be better understood by all if it were just labeled Attempt to Flank or something. In my experience tho Attack large monsters, archers, and fliers all produce more predictable results - perhaps there is no hidden check for them, like there is for "rearmost"?