Morale

[gollum]

The details are in that thread Asai posted, however the factor that dramatically affect morale you missed are the general's stars; every unit receives +1valor for every 2generalstars which, and every valor point is +2morale in turn, meaning that its +1morale/generalstar(for even number of stars). This means that a 10 star general gives +10(!) morale. Generally elite units like knights and the like have base morale=8. This is already quite high. However enything above about 14 makes units unroutable, and this is pretty easy to happen in the SP game as the discussion so far should clearly show. These are the infamous "jedis". This is made even more grave for family members that gain additional valor from v'n'vs.