For most of the history of warfare, defensive technology was far in advance of offensive weapons. A stout wall was enough to keep most enemy armies out of your cities and strongholds. This mismatch means that the history of war is filled with sieges. In order to break into a city or castle, or to stop besiegers from getting in, humans have poured all their ingenuity into creating a wide variety of weapons. And what’s a deadly siege weapon without an equally diabolical strategy for its use? Here are ten inventive, and frankly bizarre, siege weapons and tactics from history.