Special kind of entity maybe a warrior so if you're playing Japan for example during a certain period you may be allowed to build a unique sort of a unit called a samurai. If you're playing Scandinavian's during a certain era you might be able to build a certain unit called a Viking. These are units that are a facet of the culture and that's why these societies get them another society's done but again what is that game mechanics element representing?
This show picks up where Dan's Thor's Angels show left off. In the early Middle Ages Pagan Germanic-language speakers like the Vikings are a dying breed. Many of their contemporaries wish they'd die faster.