Some of you will know that I have an interest in the historical use of IEDs, (there’s a book being written, very slowly!) and for many of my presentations and seminars I use some interesting aspects of the historical use of IEDs to illustrate that these aren’t new problems. My definition of an IED excludes the use of gunpowder to “mine” castle walls. Aside from some interesting Chinese historical use of explosives, until now the earliest use of an IED that I could find in records was at the siege of Pskov in 1581. The city of Pskov was being besieged by Stephan Bathory, who had been elected King of Poland. Bathory’s troops were Polish, German, Hungarian and Scottish. Bathory had an IED made in the form of a jeweled casket, by an IED maker called Johann Ostromecki that was sent to the Russian defender Ivan Petrovich Shujski. The casket was sent to Shujksi ostensibly by a freed Russian prisoner. The casket, “booby-trapped”, exploded when opened by some of Shujski’s companions ,killing them but not its intended target.
Other historical use of IEDs from around the same time include roadside IEDs being used to ambush invading Spanish troops in Holland (I have a copy of great engraving showing a multiple IED attack from around the 1580s) and English use of “exploding” fire ships also against the Spanish… and evidence of an Italian engineer who seemed to be designing a range of innovative explosive devices for the English around this time.
However, my research over the past few days has uncovered perhaps earlier use of IEDs. The key technological development within the confines of my definition, is the invention, around 1500, perhaps by Leonardo da Vinci, of the flintlock/wheelock mechanism. Such a mechanism was actually first made somewhere around 1510-1520. This invention provides the opportunity to initiate gunpowder charges at a distance by means of a spring to release the mechanism, by pulling a string. Using a clock to initiate the flintlock also developed about this time and again I have found an interesting diagram from some time in the 1500s allegedly showing a clock initiated IED.
The recent finds I have made include a book written by Samuel Zimmermann of Augsberg in 1573. Most of the book discusses firework design, but sections also discuss initiation of explosive devices by means of “hidden springs” and “hidden string”. Zimmermann discusses “booby trapping” a chair that will initiate a device when sat on, and booby trapping a “purse of gold” left lying in the street.
It is possible too that a collection of explosive recipes offered for sale to Queen Elisabeth in 1574, which makes reference to “hollow tronckes” could be a reference to IEDs
Another book discussing a range of IEDs from this period is by Austrian Wulf von Senfftenberg, who discusses in some detail IEDs such as the Pskov device. Von Senfftenberg advocates using explosive letters against Turks, but suggests the letters must only be carried by Jews!
More to follow and I’ll try and post some of the historical diagrams if people are interested…