Byzantine Weapons and Warfare

[HHornblower]

I concur with your view of "ersatz" Arabic Greek fire. Certainly Nafta was a well-know incendary weapon which was incidently documented by Greek historians travelling with Alexander in the 4th century BC.
There are articles claiming that the Byzantines actually forgot the production method of Greek Fire. If this was the case, could the sack of Constantinople in 1204 be that turning point?

Regards,

HHornblower