Maybe someone already mentioned, but in some cases/countries (not England), they used to lob dead bodies contaminated with the black plague in order to infect the city. Heads also, and I think that one started with the Chinese or Romans, not sure. PeteSTEVE G wrote:During the wars with Scotland in the 13th century, Edward 1st laid siege to Stirling castle. He decided to build what is thought to have been the worlds largest trebuchet to bring down the walls.
This monster took a team of carpenters three months to build, and before it was completed the Scots, fearful of the results, tried to surrender.
Edward, being a bit of a bastard, would have none of this and said "You don't deserve any grace, but must surrender to my will," herded them back within the walls and proceeded to lob stones at them anyway!

PS: Now that I think about the 'bodies' more, I think it was the Vikings who did that, perhaps in France. There was an HC show about it.