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, and though it is no longer common in modern warfare, [1] escalade technologies are still developed and used in certain tactical applications.
Escalade consists of attacking soldiers advancing to the base of a wall, setting ladders, and climbing to engage the defending forces. Though very simple and direct, it was also one of the most dangerous options available; escalade would generally be conducted in the face of arrow fire from the battlements, and the defenders would naturally attempt to push ladders away from the wall. Heated or incendiary substances such as boiling water, heated sand, and pitch-coated missiles were sometimes poured on attacking soldiers. This made it difficult for attackers to reach the top of the wall, and those that did would often quickly be overwhelmed by the defenders on the walls, only being able to push into the defenses after suffering heavy attrition.
Fortifications were often constructed in such a way as to impede escalade, or at least to make it a less attractive option. Countermeasures to escalade included moats (which prevented ladder-bearing soldiers from reaching the base of a wall), machicolations (which facilitated attacks on enemy soldiers while they climbed), and talus walls (which could weaken ladders or were too tall for ladders to reach the top of).
Because of the difficulties involved, escalade was typically very costly for the attackers. Two critical factors in determining the success or failure of escalade were the number of ladders and the speed with which they could be arranged. A slow attack gave the defenders too much time to pick off the attackers with arrows, while having too few ladders meant that the number of troops would be insufficient to capture the battlements. A third important factor was the estimation of the height of the wall. If the ladders were made too long, they could be pushed over by the defenders, and if they were too short, the attackers would not be able to reach the top of the wall. Tactics employed included getting as many men as possible on the ladder at the same time (the more men that were on the ladder at the same time, the heavier it became, making pushing it over difficult), attacking by night, or scaling a remote section of the wall.
Escalade was, in essence, an attempt to overwhelm defenders in a direct assault rather than sit through a protracted siege. Attackers would generally attempt escalade if they had reasons for wanting a swift conclusion, or if they had an overwhelming superiority in numbers. Otherwise, less costly siege tactics were often preferred.
Escalade is no longer common in modern warfare, as new technologies and tactics have essentially made escalade obsolete; for example, most fortified walls that would have required attackers to use escalade may now simply be destroyed by explosives or nullified by military aircraft.
However, escalade still exists as a viable (albeit niche) combat tactic, and is occasionally used by police tactical, counterterrorist, and special forces units to raid a structure through its upper levels, either to avoid a barricaded entrance or line of sight, or to breach the structure from multiple points. Mechanical assault ladders, typically installed on the roof of vehicles and featuring ramps that can extend or angle themselves to reach an entry point such as a window sill or balcony, are often used in this capacity.
Medieval warfare is the warfare of the Middle Ages. Technological, cultural, and social advancements had forced a severe transformation in the character of warfare from antiquity, changing military tactics and the role of cavalry and artillery. In terms of fortification, the Middle Ages saw the emergence of the castle in Europe, which then spread to the Holy Land.
Medieval fortification refers to medieval military methods that cover the development of fortification construction and use in Europe, roughly from the fall of the Western Roman Empire to the Renaissance. During this millennium, fortifications changed warfare, and in turn were modified to suit new tactics, weapons and siege techniques.
A siege is a military blockade of a city, or fortress, with the intent of conquering by attrition, or by well-prepared assault. This derives from Latin: sedere, lit. 'to sit'. Siege warfare is a form of constant, low-intensity conflict characterized by one party holding a strong, static, defensive position. Consequently, an opportunity for negotiation between combatants is common, as proximity and fluctuating advantage can encourage diplomacy.
A Roman siege tower or breaching tower is a specialized siege engine, constructed to protect assailants and ladders while approaching the defensive walls of a fortification. The tower was often rectangular with four wheels with its height roughly equal to that of the wall or sometimes higher to allow archers or crossbowmen to stand on top of the tower and shoot arrows or quarrels into the fortification. Because the towers were wooden and thus flammable, they had to have some non-flammable covering of iron or fresh animal skins.
A battering ram is a siege engine that originated in ancient times and was designed to break open the masonry walls of fortifications or splinter their wooden gates. In its simplest form, a battering ram is just a large, heavy log carried by several people and propelled with force against an obstacle; the ram would be sufficient to damage the target if the log were massive enough and/or it were moved quickly enough. Later rams encased the log in an arrow-proof, fire-resistant canopy mounted on wheels. Inside the canopy, the log was swung from suspensory chains or ropes.
A glacis in military engineering is an artificial slope as part of a medieval castle or in early modern fortresses. They may be constructed of earth as a temporary structure or of stone in more permanent structure. More generally, a glacis is any slope, natural or artificial, which fulfils the above requirements. The etymology of this French word suggests a slope made dangerous with ice, hence the relationship with glacier.
A frontal assault is a military tactic which involves a direct, full-force attack on the front line of an enemy force, rather than to the flanks or rear of the enemy. It allows for a quick and decisive victory, but at the cost of subjecting the attackers to the maximum defensive power of the enemy; this can make frontal assaults costly even if successful, and often disastrously costly if unsuccessful. It may be used as a last resort when time, terrain, limited command control, or low troop quality do not allow for any battlefield flexibility. The risks of a frontal assault can be mitigated by the use of heavy supporting fire, diversionary attacks, the use of cover, or infiltration tactics.
A siege engine is a device that is designed to break or circumvent heavy castle doors, thick city walls and other fortifications in siege warfare. Some are immobile, constructed in place to attack enemy fortifications from a distance, while others have wheels to enable advancing up to the enemy fortification. There are many distinct types, such as siege towers that allow foot soldiers to scale walls and attack the defenders, battering rams that damage walls or gates, and large ranged weapons that attack from a distance by launching projectiles. Some complex siege engines were combinations of these types.
Close-quarters combat (CQC) or close-quarters battle (CQB) is a close combat situation between multiple combatants involving ranged or melee combat. It can occur between military units, law enforcement and criminal elements, and in other similar situations.
Early thermal weapons, which used heat or burning action to destroy or damage enemy personnel, fortifications or territories, were employed in warfare during the classical and medieval periods.
A bastion fort or trace italienne is a fortification in a style that evolved during the early modern period of gunpowder when the cannon came to dominate the battlefield. It was first seen in the mid-fifteenth century in Italy. Some types, especially when combined with ravelins and other outworks, resembled the related star fort of the same era.
For much of history, humans have used some form of cavalry for war and, as a result, cavalry tactics have evolved over time. Tactically, the main advantages of cavalry over infantry were greater mobility, a larger impact, and a higher riding position.
Naval boarding action is an offensive tactic used in naval warfare to come up against an enemy marine vessel and attack by inserting combatants aboard that vessel. The goal of boarding is to invade and overrun the enemy personnel on board in order to capture, sabotage, or destroy the enemy vessel. While boarding attacks were originally carried out by ordinary sailors who are proficient in hand-to-hand combat, larger warships often deploy specially trained and equipped regular troops such as marines and special forces as boarders. Boarding and close quarters combat had been a primary means to conclude a naval battle since antiquity, until the early modern period when heavy naval guns gained tactical primacy at sea.
The siege of Yongqiu was a siege for Yongqiu in 756 AD during the An Shi Rebellion, by the An Lushan rebels against the Tang army. The Tang army, led by Zhang Xun, finally won this battle.
The siege of Chencang was a battle fought between the states of Shu Han and Cao Wei between December 228 to early 229 during the Three Kingdoms period in China. It was the second of the Northern Expeditions led by Shu-Han's chancellor-regent, Zhuge Liang, to invade Wei. It was part of an attempt to divert Wei forces away from Jing Province following the Battle of Shiting between Wei and Shu's ally state, Eastern Wu. The siege came to an end when Shu forces retreated after failing to capture Chencang.
The siege of Château Gaillard was a part of Philip II's campaign to conquer John, King of England's continental properties. The French king besieged Château Gaillard, a Norman fortress, for six months. The Anglo-Normans were beaten in the battle and the consequence was the fall of Normandy.
The siege of Nöteborg was one of the first sieges of the Great Northern War, when Russian forces captured the Swedish fortress of Nöteborg in October 1702. Peter the Great had assembled a force of 20,000 men for this task, and marched for ten days to his destination. About 12,000 of these men were positioned on the banks of the Neva river, where they camped until 6 October (N.S.). On that day, after giving command of the main force to Boris Sheremetev, he moved toward Nöteborg. After the Swedish commander, Wilhelm von Schlippenbach, refused to give up the fort immediately, the Russians began bombarding it. A final Russian assault on the fort was tactically unsuccessful, resulting in heavy casualties, but forced the fort's defenders to surrender on 22 October 1702. After taking control, Peter immediately began reconstructing the fort for his own purposes, renaming it Shlisselburg.
This is an overview of Chinese siege weapons.
The siege of Petra was fought in 550 AD, between the Byzantines under general Bessas, and the Sasanian Persian garrison of Petra in the buffer state of Lazica. The strategic fortress had previously been held by the Byzantines before it was seized in 541 by the Sasanian king Khosrow I, and his Lazi allies. This conquest gave the Sassanian Empire access to the Black Sea and marked the beginning of the Lazic War. After a failed attempt to recapture Petra in 549, the Byzantine emperor Justinian I sent an army under Bessas to retake the fortress. The Byzantine historian Procopius described the resulting siege in vivid detail.