Though medieval times are known—particularly in Europe, for violence and brutality and tactical sophistication does not exactly leap out, there were a few rather interesting innovations that were given exposure during the Crusades and contributed to the arsenal of exchange of destructive play-things among the East and West—arsenal itself coming from the Arabic word, dฤr as-sinฤรงa, a workshop.
The mainstay of the European Crusaders was the siege engine or the catapult (battering rams and siege towers included), which although refined and improved, was a technology already known and utilised during antiquity—and that was really the West’s best game. They were skilled at building secure fortifications that would repel attacks but were also good an undermining defenses. The Seljuk Turks were highly skilled archers and were more mobile than European warhorses at staging ambushes however they were also in possession of a secret weapon, inspired by the so called Greek fire of the Byzantines. Still a mystery as to the exact formula, this was an incendiary substance, and like napalm, once aflame it was impossible to extinguish and would burn even across the surface of water or could be used like a flame-thrower.