Of course Ghost could also add another bit of coding which would make it to where members of the same village can't target war NPCs of the same village. So really Tokani if this would be implemented it's not that large of a problem.
I am sorry Zare but I cannot see that being to good of an idea, cause first as Sin said there would be a lot of coding needed and a lot of bugs involved but also they would just get in the way like what if your going to attack someone and the NPC gets in the way of your attack and then you die cause someone ran up and hit you with their jutsu the moment your vulnerable.. The "war NPC's" would be more trouble then they are worth.
became kage of a strong village somebody from a weak village ticks you off wat do you do?say its war time but your village have 20 members online while there village has 5 now a bit unfair if you ask me so i say why not make war npcs for example you would have waterfall war NIN(npc) or Leaf war NIN(npc) so when you declare war npcs will stay behind to defend your village or if givenin the comand by a kage will invade the village you are at war with and fight all members of that village the nins dont have to be by the 100s but just enough so that war is more fun and less slaughter the npcs would just wear the village uniform like the snow nin jacket or waterfall nin robe or akat clock or war cloack