Medieval siege engines

siege engine originating in ancient times

thumb|Replica counterweight trebuchets at Château de Castelnaud-la-Chapelle|Château de Castelnaud thumb|Counterweight trebuchet used in a siege from the ''Jami' al-tawarikh'',

siege engine

Roman siege engine

thumb|Miniature model of a Chinese mangonel (traction trebuchet)

right|thumb|A replica of an ancient scaling ladder used for escalade, in Xi'an, [[China]] Escalade is the act of scaling defensive walls or ramparts with the aid of ladders. Escalade was a prominent feature of sieges in ancient and medieval warfare. Although no longer common in modern warfare, escalade technologies are still developed and used in certain tactical applications.