AP - 1363? Sweet! That's another two centuries older!

Granite - Thanks for the book recommendation, I've heard of Buda's Wagon, and was in the process of checking it out.

I've looked at some of the old Roman and Chinese flame throwers and Greek fire, but despite the DoD definition I'm passing on incendiaries. Gunpowder, however, makes the cut.

[The DoD definition: Improvised Explosive Device. A device placed or fabricated in an improvised manner incorporating destructive, lethal, noxious, pyrotechnic, or incendiary chemicals and designed to destroy, incapacitate, harass, or distract. It may incorporate military stores, but is normally devised from nonmilitary components.
(Department of Defense DIRECTIVE; NUMBER 2000.19E February 14, 2006, SUBJECT: Joint Improvised Explosive Device Defeat Organization (JIEDDO))
I usually interpret this as any weapon not professionally purpose built as a weapon or any weapon used by someone other than a professional soldier, an insanely broad definition.]