Kingdoms unit profiles at the .com ?

[Kobal2fr]

I've just been browsing the official website for Kingdoms, hoping there were more videos where the first two came from. Sadly, no, but there ARE a bunch of unit previews, some of which look damn cool, and some are just... weird. To me anyway.

For example, the Byzantines are apparently going to get a sort of primitive flamethrower unit. Basically a guy with a big sack of Greek fire strapped to his back and a handpump. Do you guys know if there's any historical basis for those ? I know the Byzantines loved their Greek fire, but I thought it was only used in naval warfare, and maybe the odd siege machine ?