Historical research always manages to bring up surprises -- and the peculiar innovations of battle seem to be where human beings have exerted an awful (and I do mean awful) lot of imagination. The Venetians had letter bombs in the 16th century and even though it was considered dishonorable to send them rather than face one's enemy, sometimes expediency won out when attempting to remove a rival. But today's surprise came from BibliOdyssey with illustrations from a 16th century German manuscript on new ways to use fire and explosives. Most astonishing was attaching it to hawks and hounds...which I suppose was the Renaissance version of "sharks with fricking lasers on their heads." I suspect if tried this plan did not meet with much success.