Blows are struck in Initiative order. If a model is killed before its turn to strike, it does not fight. If Initiative values are drawn, blows are struck simultaneously.
A model's Initiative characteristic determines who attacks first in close combat (including any bonuses for using certain weapons or spells that might increase the Initiative value). Work your way through the Initiative values of the models, starting with the highest and ending with the lowest. Models make attacks when their Initiative value is reached, assuming of course that they haven't already been killed by a model with a higher Initiative and that there is still an enemy in base contact. Where models have the same Initiative, their attacks are made simultaneously.
Models that charged the same turn add +1 to their Initiative.