Editing Siege engine (section)

==Middle Ages==
[[File:MonsMeg.JPG|thumb|The medieval [[Mons Meg]] with its 20" (50 cm) [[Round shot|cannonballs]]]]

[[Medieval]] designs include a large number of [[catapult]]s such as the [[mangonel]], [[Onager (siege weapon)|onager]], the [[ballista]], the traction [[trebuchet]] (first designed in China in the 3rd century BC and brought over to Europe in the 4th century AD), and the counterweight trebuchet (first described by [[Mardi bin Ali al-Tarsusi]] in the 12th century, though of unknown origin). These machines used mechanical energy to fling large projectiles to batter down stone walls. Also used were the battering ram and the [[siege tower]], a wooden tower on wheels that allowed attackers to climb up and over castle walls, while protected somewhat from enemy arrows.

A typical military confrontation in medieval times was for one side to lay siege to an opponent's [[castle]]. When properly defended, they had the choice whether to assault the castle directly or to starve the people out by blocking food deliveries, or to employ war machines specifically designed to destroy or circumvent castle defenses. Defending soldiers also used trebuchets and catapults as a defensive advantage.

Other tactics included [[Early thermal weapons|setting fires]] against castle walls in an effort to decompose the cement that held together the individual stones so they could be readily knocked over. Another indirect means was the practice of [[Mining (military)|mining]], whereby tunnels were dug under the walls to weaken the foundations and destroy them. A third tactic was the catapulting of diseased animals or human corpses over the walls in order to promote disease which would force the defenders to surrender, an early form of [[biological warfare]].