I believe we get a mixed culture skeleton army.
Because of the story...the guy going from city to city to collect bones and make probably new soldiers out of it.. so he maybe went over different cultural lands..
asian, european..probably also african/egyptian... i also can see new chariots but not the egypt one but eastern one (like chariots from khand (lord of the rings)).
my bet is a revival of Tomb Guard, Sphinx and Snake Kit for egyptian. Chariots , Catapults more like mongolian and elite Samurai skeletons Japanese style