Originally posted by Puzz3D
You can switch to hold formation to receive the charge, although, I don't find this to be necessary with full size 60 man units. One-on-one, a YS in engage-at-will will not be tripped into a rout even by a charging HC as long as it's facing the HC and not moving. If you weren't aware of it, there is a -2 moral penalty for a unit when moving if the formation is disrupted by the movement. Keep in mind that there is a 2 point positive hysteresis in the morale system. That means a +2 point morale effect has no effect until the total morale bonus impacting the unit is more than +2. So, if a unit looses -2 morale as a result of a disrupted formation, it does not get the +2 morale back when it gets back into good order. An additional morale bonus of at least +1 is need to trigger a morale increase.
That explains why YS fight better and longer in a line with high morale units and also why employing them statically to meet enemy units is often the best bet (by observation/inspection).

Thanks for clearing that - i had full spears routing especially in large team games just like that because i missed the ordered formation morale impact.