Dunno if it has been commented, but was less than amused by the fact that the shadowspawn out from Caemlyn seemed to develop Jason style teleportation whenever they moved offscreen, which is a criticism towards that random trolloc force heading for Cairhien and the fact that the southern trolloc army showed up so damn fast.

Having armies cross huge rivers is a nightmarish undertaking for armies with logistical capabilities much more comprehensive than random shadowspawn hordes. The fact that they managed to do it twice (and in the case of the Erinin they have to have done it while opposed by artillery, archers, channelers and more in the other shore) stretched my suspension of disbelief. A lot.

Frankly, it'd have been just fine if they had just put a Dreadlord or two with the trollocs and have them get to the proximities of Cairhien through use of portal stones.