Military technology. The Roman military technology ranged from personal equipment and armament to deadly siege engines. Foot soldier. Weaponry. The pilum (javelin) was a weapon favored by legionaries and weighed approximately five pounds/2.25 kilograms. It was designed to be used only once and was destroyed upon initial use. This feature prevented the enemy from reusing spears. All soldiers carried two versions of this weapon: a primary spear and a backup. A solid block of wood in the middle of the weapon provided legionaries protection for their hands while carrying the device. According to Polybius, historians have records of "how the Romans threw their spears and then charged with swords". This tactic seemed to be common practice among Roman infantry. Armour. While heavy, intricate armour was not uncommon (cataphracts), the Romans perfected a relatively light, full torso armour made of segmented plates (lorica segmentata). This segmented armour provided good protection for vital areas but did not cover as much of the body as lorica hamata (chain mail). The lorica segmentata provided better protection, but the plate bands were expensive and difficult to produce and difficult to repair in the field. Generally, mail was cheaper, easier to produce, and simpler to maintain, was one-size-fits-all and was more comfortable to wear; thus, it remained the primary form of armour even when lorica segmentata was in use. Tactics. Testudo is a tactical military maneuver original to Rome. The tactic was implemented by having units raise their shields in order to protect themselves from enemy projectiles raining down on them. The strategy only worked if each member of the testudo protected his comrade. Commonly used during siege battles, the "sheer discipline and synchronization required to form a Testudo" was a testament to the abilities of legionnaires. Testudo, meaning tortoise in Latin, "was not the norm, but rather adopted in specific situations to deal with particular threats on the battlefield". The Greek phalanx and other Roman formations were a source of inspiration for this maneuver. Cavalry. The Roman cavalry saddle had four horns and is believed to have been copied from Celtic peoples. Siege warfare. Roman siege engines such as ballistas, scorpions and onagers were not unique, but the Romans were probably the first people to put ballistas on carts for better mobility on campaigns. On the battlefield, it is thought that they were used to pick off enemy leaders. There is one account of the use of artillery in battle from Tacitus, Histories III,23:On engaging they drove back the enemy, only to be driven back themselves, for the Vitellians had concentrated their artillery on the raised road that they might have free and open ground from which to fire; their earlier shots had been scattered and had struck the trees without injuring the enemy. A ballista of enormous size belonging to the Fifteenth legion began to do great harm to the Flavians' line with the huge stones that it hurled; and it would have caused wide destruction if it had not been for the splendid bravery of two soldiers, who, taking some shields from the dead and so disguising themselves, cut the ropes and springs of the machine. In addition to innovations in land warfare, the Romans also developed the corvus (boarding device) a movable bridge that could attach itself to an enemy ship and allow the Romans to board the enemy vessel. Developed during the First Punic War it allowed them to apply their experience in land warfare on the seas. Ballistas and onagers. While core artillery inventions were notably founded by the Greeks, Rome saw opportunity in the ability to enhance this long-range artillery. Large artillery pieces such as carroballista and onagers bombarded enemy lines, before full ground assault by infantry. The manuballista would "often be described as the most advanced two-armed torsion engine used by the Roman Army". The weapon often looks like a mounted crossbow capable of shooting projectiles. Similarly, the onager, "named after the wild ass because of its 'kick'", was a larger weapon that was capable of hurling large projectiles at walls or forts. Both were very capable machines of war and were put to use by the Roman military. The Helepolis. The helepolis was a vehicle used to besiege cities. The vehicle had wooden walls to shield soldiers as they were transported toward the enemy's walls. Upon reaching the walls, the soldiers would disembark at the top of the 15 m tall structure and drop on to the enemy's ramparts. To be effective in combat, the helepolis was designed to be self-propelled. The self-propelled vehicles were operated using two types of motors: an internal motor powered by humans, or a counterweight motor powered by gravity. The human-powered motor used a system of ropes that connected the axles to a capstan. It has been calculated that at least 30 men would be required to turn the ...
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