Siege engines, catapaults and the like, were replaced by siege cannon and mortars.
The reason the Greeks could not capture walled Troy is that they did not have the siege engines developed in later times.
most siege machines are made from wood
Straight/Inline engines, V type engines, Rotary engines and diesel engines
I would think the Roman Army did.
They are strong.
the anglo-saxons
Siege engines.
Evidence of siege engines has been found as far back as the early Kings of China. It is believed by some that explorers like the Polo Brothers brought the knowledge of siege warfare with them to Europe. With the building of secure castles new ways were needed to be found in order to overthrow these fortresses. By the time of the middle ages siege engines were a big part of warfare.
siege engine which is a catapult...................
Trebuchet Catapult Ballista
Siege Engines have been used since the time of the Roman Empire. They were useful when the invaders found their way blocked by a castle or similar large structure. There have been programs from BBC detailing how and why the various siege weapons were used. The modern equivalent to siege engines are the mobile artillery used by most Armies on the planet