From various sources I've heard that the Draco (you know this Cloth Pipe with a metal Dragon head at the front) was "invented by the romans after a visit to egypt where there were amazed by Crocodiles. now many "barbarian" cavalary units have this standard aswell in EB, obviously preceeving the roman Expansion in Egypt this lets to conclude that the theory about the Crocodiles is incorrect and the romans copied this banner from "the Barbarians".

So who's right and if the Crocodile stuff is right, why do some cavalary units have "the draco"(I don'T doubt that they had i'm merely interested in the way they come up with it.